dotCover in R# 2025.3.0.1 don't work

Created November 17, 2025 07:57

I use R# version 2025.3.0.1 within VS 2026 RTM (same behavior within VS2022) and while running test work fine, covering tests consistently return Inconclusive Test has not run for ALL tests.

I try to run VS2026 with: devenv.exe /ReSharper.LogLevel Trace /ReSharper.LogFile

but in sub folders of
C:\Users\pat\AppData\Local\JetBrains\ReSharperPlatformVs18

I don't see any logs (I see a directory named vAny_3f73df19\\UsageStatistics2.1 created but it doesn't contain any file with more than 1KB with nothing relevant)

Finally the new design with only black icons is absolutely ugly give us back the colors.

Super disappointed by JB

2 comments

Patrick Smacchia

Created November 18, 2025 07:34

After further investigation I got this error while running dotCover 2025.3.0.1 within VS 2026 RTM

nunit.engine.api.dll v3.0.0.0 is in the same directory than the DLL that contains the test. It always worked this way.

However it is a .NET 2.0 runtime assembly and I suspect this plays a role in the issue. Did you change anything in dotCover that prevent to run a .NET 2 assembly? Maybe the root cause is something else, but dotCover used to work in that context and not anymore.

-------------------------------------------------------------------

nunit.engine.api.dll attributes:

[assembly: AssemblyConfiguration(".NET 2.0")]
[assembly: AssemblyTitle("NUnit Engine API")]
[assembly: AssemblyDescription("Defines the interfaces used to access the NUnit Engine")]
[assembly: ComVisible(false)]
[assembly: Guid("c686a4e8-7c4b-4c9e-88e7-65cd1b90ba1e")]
[assembly: AssemblyProduct("NUnit Engine API")]
[assembly: AssemblyInformationalVersion("3.12.0")]
[assembly: AssemblyFileVersion("3.12.0")]
[assembly: AssemblyVersion("3.0.0.0")]

-------------------------------------------------------------------

Full stack trace below:

2025.11.18 11:16:47.164 ERROR Unable to find assembly 'nunit.engine.api, Version=3.0.0.0, Culture=neutral, PublicKeyToken=2638cd05610744eb'., reason: System.Runtime.Serialization.SerializationException: Unable to find assembly 'nunit.engine.api, Version=3.0.0.0, Culture=neutral, PublicKeyToken=2638cd05610744eb'. Server stack trace: at System.Runtime.Serialization.Formatters.Binary.BinaryAssemblyInfo.GetAssembly() at System.Runtime.Serialization.Formatters.Binary.ObjectReader.GetType(BinaryAssemblyInfo assemblyInfo, String name) at System.Runtime.Serialization.Formatters.Binary.ObjectMap..ctor(String objectName, String[] memberNames, BinaryTypeEnum[] binaryTypeEnumA, Object[] typeInformationA, Int32[] memberAssemIds, ObjectReader objectReader, Int32 objectId, BinaryAssemblyInfo assemblyInfo, SizedArray assemIdToAssemblyTable) at System.Runtime.Serialization.Formatters.Binary.__BinaryParser.ReadObjectWithMapTyped(BinaryObjectWithMapTyped record) at System.Runtime.Serialization.Formatters.Binary.__BinaryParser.Run() at System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler handler, __BinaryParser serParser, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage) at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream, HeaderHandler handler, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage) at System.Runtime.Remoting.Channels.CrossAppDomainSerializer.DeserializeObject(MemoryStream stm) at System.Runtime.Remoting.Messaging.SmuggledMethodReturnMessage.FixupForNewAppDomain() at System.Runtime.Remoting.Channels.CrossAppDomainSink.SyncProcessMessage(IMessage reqMsg) Exception rethrown at [0]: at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) at JetBrains.ReSharper.TestRunner.Abstractions.ITestExecutor.RunTests(TestRunRequest request, ITestDiscoverySink discoverySink, ITestExecutionSink executionSink) at JetBrains.ReSharper.TestRunner.Implementation.UnitTestRemoteAgent.Execute(TestRunRequest request) in Z:\BuildAgent\work\1b668fe37ef92293\ReSharperTestRunner\src\TestRunner.Merged\Implementation\UnitTestRemoteAgent.cs:line 99 at JetBrains.ReSharper.TestRunner.Implementation.ClientEndpoint.<>c__DisplayClass4_1.<TryRegisterHandler>b__1() in Z:\BuildAgent\work\1b668fe37ef92293\ReSharperTestRunner\src\TestRunner.Core\Implementation\ClientEndpoint.cs:line 56 at System.Threading.Tasks.Task`1.InnerInvoke() at System.Threading.Tasks.Task.Execute() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at JetBrains.ReSharper.TestRunner.Implementation.ClientEndpoint.<RunAndLog>d__10.MoveNext() in Z:\BuildAgent\work\1b668fe37ef92293\ReSharperTestRunner\src\TestRunner.Core\Implementation\ClientEndpoint.cs:line 140

--- EXCEPTION #1/2 [RdFault]
Message = “
Unable to find assembly 'nunit.engine.api, Version=3.0.0.0, Culture=neutral, PublicKeyToken=2638cd05610744eb'., reason: System.Runtime.Serialization.SerializationException: Unable to find assembly 'nunit.engine.api, Version=3.0.0.0, Culture=neutral, PublicKeyToken=2638cd05610744eb'.

Server stack trace:
at System.Runtime.Serialization.Formatters.Binary.BinaryAssemblyInfo.GetAssembly()
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.GetType(BinaryAssemblyInfo assemblyInfo, String name)
at System.Runtime.Serialization.Formatters.Binary.ObjectMap..ctor(String objectName, String[] memberNames, BinaryTypeEnum[] binaryTypeEnumA, Object[] typeInformationA, Int32[] memberAssemIds, ObjectReader objectReader, Int32 objectId, BinaryAssemblyInfo assemblyInfo, SizedArray assemIdToAssemblyTable)
at System.Runtime.Serialization.Formatters.Binary.__BinaryParser.ReadObjectWithMapTyped(BinaryObjectWithMapTyped record)
at System.Runtime.Serialization.Formatters.Binary.__BinaryParser.Run()
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler handler, __BinaryParser serParser, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream, HeaderHandler handler, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
at System.Runtime.Remoting.Channels.CrossAppDomainSerializer.DeserializeObject(MemoryStream stm)
at System.Runtime.Remoting.Messaging.SmuggledMethodReturnMessage.FixupForNewAppDomain()
at System.Runtime.Remoting.Channels.CrossAppDomainSink.SyncProcessMessage(IMessage reqMsg)

Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at JetBrains.ReSharper.TestRunner.Abstractions.ITestExecutor.RunTests(TestRunRequest request, ITestDiscoverySink discoverySink, ITestExecutionSink executionSink)
at JetBrains.ReSharper.TestRunner.Implementation.UnitTestRemoteAgent.Execute(TestRunRequest request) in Z:\BuildAgent\work\1b668fe37ef92293\ReSharperTestRunner\src\TestRunner.Merged\Implementation\UnitTestRemoteAgent.cs:line 99
at JetBrains.ReSharper.TestRunner.Implementation.ClientEndpoint.<>c__DisplayClass4_1.<TryRegisterHandler>b__1() in Z:\BuildAgent\work\1b668fe37ef92293\ReSharperTestRunner\src\TestRunner.Core\Implementation\ClientEndpoint.cs:line 56
at System.Threading.Tasks.Task`1.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at JetBrains.ReSharper.TestRunner.Implementation.ClientEndpoint.<RunAndLog>d__10.MoveNext() in Z:\BuildAgent\work\1b668fe37ef92293\ReSharperTestRunner\src\TestRunner.Core\Implementation\ClientEndpoint.cs:line 140
”
ReasonTypeFqn = System.Runtime.Serialization.SerializationException
ReasonText = “
System.Runtime.Serialization.SerializationException: Unable to find assembly 'nunit.engine.api, Version=3.0.0.0, Culture=neutral, PublicKeyToken=2638cd05610744eb'.

Server stack trace:
at System.Runtime.Serialization.Formatters.Binary.BinaryAssemblyInfo.GetAssembly()
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.GetType(BinaryAssemblyInfo assemblyInfo, String name)
at System.Runtime.Serialization.Formatters.Binary.ObjectMap..ctor(String objectName, String[] memberNames, BinaryTypeEnum[] binaryTypeEnumA, Object[] typeInformationA, Int32[] memberAssemIds, ObjectReader objectReader, Int32 objectId, BinaryAssemblyInfo assemblyInfo, SizedArray assemIdToAssemblyTable)
at System.Runtime.Serialization.Formatters.Binary.__BinaryParser.ReadObjectWithMapTyped(BinaryObjectWithMapTyped record)
at System.Runtime.Serialization.Formatters.Binary.__BinaryParser.Run()
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler handler, __BinaryParser serParser, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream, HeaderHandler handler, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
at System.Runtime.Remoting.Channels.CrossAppDomainSerializer.DeserializeObject(MemoryStream stm)
at System.Runtime.Remoting.Messaging.SmuggledMethodReturnMessage.FixupForNewAppDomain()
at System.Runtime.Remoting.Channels.CrossAppDomainSink.SyncProcessMessage(IMessage reqMsg)

Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at JetBrains.ReSharper.TestRunner.Abstractions.ITestExecutor.RunTests(TestRunRequest request, ITestDiscoverySink discoverySink, ITestExecutionSink executionSink)
at JetBrains.ReSharper.TestRunner.Implementation.UnitTestRemoteAgent.Execute(TestRunRequest request) in Z:\BuildAgent\work\1b668fe37ef92293\ReSharperTestRunner\src\TestRunner.Merged\Implementation\UnitTestRemoteAgent.cs:line 99
at JetBrains.ReSharper.TestRunner.Implementation.ClientEndpoint.<>c__DisplayClass4_1.<TryRegisterHandler>b__1() in Z:\BuildAgent\work\1b668fe37ef92293\ReSharperTestRunner\src\TestRunner.Core\Implementation\ClientEndpoint.cs:line 56
at System.Threading.Tasks.Task`1.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at JetBrains.ReSharper.TestRunner.Implementation.ClientEndpoint.<RunAndLog>d__10.MoveNext() in Z:\BuildAgent\work\1b668fe37ef92293\ReSharperTestRunner\src\TestRunner.Core\Implementation\ClientEndpoint.cs:line 140
”
ReasonMessage = “Unable to find assembly 'nunit.engine.api, Version=3.0.0.0, Culture=neutral, PublicKeyToken=2638cd05610744eb'.”
StackTraceString = “
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in Throw.il:line IL_000C mvid 3020
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in HandleNonSuccessAndDebuggerNotification.il:line IL_0028 mvid 3020
at JetBrains.ReSharper.UnitTestFramework.Execution.TestRunner.Activation.ServerMessageBroker.<SendMessage>d__2.MoveNext() in SendMessage.il:line IL_0077 mvid 4CFC
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in Throw.il:line IL_000C mvid 3020
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in HandleNonSuccessAndDebuggerNotification.il:line IL_0028 mvid 3020
at JetBrains.ReSharper.UnitTestFramework.Execution.TestRunner.TestRunnerAgentManager.TestRunnerExecutionAgent.<<RunTests>b__8_1>d.MoveNext() in RunTests.il:line IL_00AE mvid 4CFC or RunTests.il:line IL_02D6 mvid 4CFC
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in Throw.il:line IL_000C mvid 3020
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in HandleNonSuccessAndDebuggerNotification.il:line IL_0028 mvid 3020
at JetBrains.ReSharper.UnitTestFramework.Common.Extensions.TaskExtensions.<ThrowIf>d__13`1.MoveNext() in ThrowIf.il:line IL_0118 mvid 4CFC
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in Throw.il:line IL_000C mvid 3020
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in HandleNonSuccessAndDebuggerNotification.il:line IL_0028 mvid 3020
at JetBrains.ReSharper.UnitTestFramework.Common.Extensions.TaskExtensions.<CancelIf>d__16.MoveNext() in CancelIf.il:line IL_0126 mvid 4CFC
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in Throw.il:line IL_000C mvid 3020
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in HandleNonSuccessAndDebuggerNotification.il:line IL_0028 mvid 3020
at JetBrains.ReSharper.UnitTestFramework.Execution.TestRunner.TestRunnerAgentManager.TestRunnerExecutionAgent.<RunTests>d__8.MoveNext() in RunTests.il:line IL_00AE mvid 4CFC or RunTests.il:line IL_02D6 mvid 4CFC
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in Throw.il:line IL_000C mvid 3020
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in HandleNonSuccessAndDebuggerNotification.il:line IL_0028 mvid 3020
at JetBrains.ReSharper.UnitTestFramework.Execution.TestRunner.TestRunnerRunStrategy.<Run>d__14.MoveNext() in Run.il:line IL_01C8 mvid 4CFC
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in Throw.il:line IL_000C mvid 3020
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in HandleNonSuccessAndDebuggerNotification.il:line IL_0028 mvid 3020
at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.<StartCore>d__37.MoveNext() in StartCore.il:line IL_01E7 mvid 4CFC or StartCore.il:line IL_039B mvid 4CFC
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in Throw.il:line IL_000C mvid 3020
at JetBrains.Util.Special.GeneralUtil.WithNotNull[T](T item, Action`1 action) in WithNotNull.il:line IL_001D mvid 05E8
at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.<StartCore>d__37.MoveNext() in StartCore.il:line IL_01E7 mvid 4CFC or StartCore.il:line IL_039B mvid 4CFC
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in Throw.il:line IL_000C mvid 3020
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in HandleNonSuccessAndDebuggerNotification.il:line IL_0028 mvid 3020
at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.<Start>d__36.MoveNext() in Start.il:line IL_0182 mvid 4CFC
”
ExceptionPath = Root.InnerException
ClassName = JetBrains.Rd.Tasks.RdFault
HResult = COR_E_EXCEPTION=80131500
Source = mscorlib
Data.ThreadLocalDebugInfo = “
call `ServerSocket-<noname>.JetBrains.ReSharper.TestRunner.Abstractions.IClientEndpoint, JetBrains.ReSharper.TestRunner.Abstractions, Version=2.16.1.0, Culture=neutral, PublicKeyToken=5c492ec4f3eccde3.System.Threading.Tasks.Task`1[JetBrains.ReSharper.TestRunner.Abstractions.Objects.IAutoRegisterInProtocol] SendMessage(JetBrains.ReSharper.TestRunner.Abstractions.Objects.IAutoRegisterInProtocol)_proxy` (15720032581159034473), taskId=1000006
-> call `ServerSocket-<noname>.JetBrains.ReSharper.TestRunner.Abstractions.IClientEndpoint, JetBrains.ReSharper.TestRunner.Abstractions, Version=2.16.1.0, Culture=neutral, PublicKeyToken=5c492ec4f3eccde3.System.Threading.Tasks.Task`1[JetBrains.ReSharper.TestRunner.Abstractions.Objects.IAutoRegisterInProtocol] SendMessage(JetBrains.ReSharper.TestRunner.Abstractions.Objects.IAutoRegisterInProtocol)_proxy` (15720032581159034473), taskId=1000006
”

--- Outer ---

--- EXCEPTION #2/2 [LoggerException]
Message = “
Unable to find assembly 'nunit.engine.api, Version=3.0.0.0, Culture=neutral, PublicKeyToken=2638cd05610744eb'., reason: System.Runtime.Serialization.SerializationException: Unable to find assembly 'nunit.engine.api, Version=3.0.0.0, Culture=neutral, PublicKeyToken=2638cd05610744eb'.

Server stack trace:
at System.Runtime.Serialization.Formatters.Binary.BinaryAssemblyInfo.GetAssembly()
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.GetType(BinaryAssemblyInfo assemblyInfo, String name)
at System.Runtime.Serialization.Formatters.Binary.ObjectMap..ctor(String objectName, String[] memberNames, BinaryTypeEnum[] binaryTypeEnumA, Object[] typeInformationA, Int32[] memberAssemIds, ObjectReader objectReader, Int32 objectId, BinaryAssemblyInfo assemblyInfo, SizedArray assemIdToAssemblyTable)
at System.Runtime.Serialization.Formatters.Binary.__BinaryParser.ReadObjectWithMapTyped(BinaryObjectWithMapTyped record)
at System.Runtime.Serialization.Formatters.Binary.__BinaryParser.Run()
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler handler, __BinaryParser serParser, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream, HeaderHandler handler, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
at System.Runtime.Remoting.Channels.CrossAppDomainSerializer.DeserializeObject(MemoryStream stm)
at System.Runtime.Remoting.Messaging.SmuggledMethodReturnMessage.FixupForNewAppDomain()
at System.Runtime.Remoting.Channels.CrossAppDomainSink.SyncProcessMessage(IMessage reqMsg)

Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at JetBrains.ReSharper.TestRunner.Abstractions.ITestExecutor.RunTests(TestRunRequest request, ITestDiscoverySink discoverySink, ITestExecutionSink executionSink)
at JetBrains.ReSharper.TestRunner.Implementation.UnitTestRemoteAgent.Execute(TestRunRequest request) in Z:\BuildAgent\work\1b668fe37ef92293\ReSharperTestRunner\src\TestRunner.Merged\Implementation\UnitTestRemoteAgent.cs:line 99
at JetBrains.ReSharper.TestRunner.Implementation.ClientEndpoint.<>c__DisplayClass4_1.<TryRegisterHandler>b__1() in Z:\BuildAgent\work\1b668fe37ef92293\ReSharperTestRunner\src\TestRunner.Core\Implementation\ClientEndpoint.cs:line 56
at System.Threading.Tasks.Task`1.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at JetBrains.ReSharper.TestRunner.Implementation.ClientEndpoint.<RunAndLog>d__10.MoveNext() in Z:\BuildAgent\work\1b668fe37ef92293\ReSharperTestRunner\src\TestRunner.Core\Implementation\ClientEndpoint.cs:line 140
”
InnerException = “Exception #1 at Root.InnerException”
StackTraceString = “
at JetBrains.Util.ILoggerEx.LogException(ILogger logger, LoggingLevel level, Exception exception, ExceptionOrigin exceptionOrigin, String comment) in LogException.il:line IL_0025 mvid 05E8
at JetBrains.Util.ILoggerEx.Error(ILogger logger, Exception exception, ExceptionOrigin origin, String comment) in Error.il:line IL_000A mvid 05E8
at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.<Start>d__36.MoveNext() in Start.il:line IL_0182 mvid 4CFC
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in RunInternal.il:line IL_0079 mvid 3020
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in Run.il:line IL_0009 mvid 3020 or Run.il:line IL_0034 mvid 3020
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run() in Run.il:line IL_0024 mvid 3020
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(Action action, Boolean allowInlining, Task& currentTask) in RunOrScheduleAction.il:line IL_001C mvid 3020
at System.Threading.Tasks.Task.FinishContinuations() in FinishContinuations.il:line IL_0085 mvid 3020 or FinishContinuations.il:line IL_0099 mvid 3020
at System.Threading.Tasks.Task.Finish(Boolean bUserDelegateExecuted) in Finish.il:line IL_0085 mvid 3020
at System.Threading.Tasks.Task`1.TrySetException(Object exceptionObject) in TrySetException.il:line IL_002A mvid 3020
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception) in SetException.il:line IL_0026 mvid 3020
at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.<StartCore>d__37.MoveNext() in StartCore.il:line IL_039B mvid 4CFC
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in RunInternal.il:line IL_0079 mvid 3020
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in Run.il:line IL_0009 mvid 3020 or Run.il:line IL_0034 mvid 3020
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run() in Run.il:line IL_0024 mvid 3020
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(Action action, Boolean allowInlining, Task& currentTask) in RunOrScheduleAction.il:line IL_001C mvid 3020
at System.Threading.Tasks.Task.FinishContinuations() in FinishContinuations.il:line IL_0085 mvid 3020 or FinishContinuations.il:line IL_0099 mvid 3020
at System.Threading.Tasks.Task.Finish(Boolean bUserDelegateExecuted) in Finish.il:line IL_0085 mvid 3020
at System.Threading.Tasks.Task`1.TrySetException(Object exceptionObject) in TrySetException.il:line IL_002A mvid 3020
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception) in SetException.il:line IL_0026 mvid 3020
at JetBrains.ReSharper.UnitTestFramework.Execution.TestRunner.TestRunnerRunStrategy.<Run>d__14.MoveNext() in Run.il:line IL_01C8 mvid 4CFC
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in RunInternal.il:line IL_0079 mvid 3020
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in Run.il:line IL_0009 mvid 3020 or Run.il:line IL_0034 mvid 3020
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run() in Run.il:line IL_0024 mvid 3020
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(Action action, Boolean allowInlining, Task& currentTask) in RunOrScheduleAction.il:line IL_001C mvid 3020
at System.Threading.Tasks.Task.FinishContinuations() in FinishContinuations.il:line IL_0085 mvid 3020 or FinishContinuations.il:line IL_0099 mvid 3020
at System.Threading.Tasks.Task.Finish(Boolean bUserDelegateExecuted) in Finish.il:line IL_0085 mvid 3020
at System.Threading.Tasks.Task`1.TrySetException(Object exceptionObject) in TrySetException.il:line IL_002A mvid 3020
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception) in SetException.il:line IL_0026 mvid 3020
at JetBrains.ReSharper.UnitTestFramework.Execution.TestRunner.TestRunnerAgentManager.TestRunnerExecutionAgent.<RunTests>d__8.MoveNext() in RunTests.il:line IL_00AE mvid 4CFC or RunTests.il:line IL_02D6 mvid 4CFC
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in RunInternal.il:line IL_0079 mvid 3020
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in Run.il:line IL_0009 mvid 3020 or Run.il:line IL_0034 mvid 3020
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run() in Run.il:line IL_0024 mvid 3020
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(Action action, Boolean allowInlining, Task& currentTask) in RunOrScheduleAction.il:line IL_001C mvid 3020
at System.Threading.Tasks.Task.FinishContinuations() in FinishContinuations.il:line IL_0085 mvid 3020 or FinishContinuations.il:line IL_0099 mvid 3020
at System.Threading.Tasks.Task.Finish(Boolean bUserDelegateExecuted) in Finish.il:line IL_0085 mvid 3020
at System.Threading.Tasks.Task`1.TrySetException(Object exceptionObject) in TrySetException.il:line IL_002A mvid 3020
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception) in SetException.il:line IL_0026 mvid 3020
at JetBrains.ReSharper.UnitTestFramework.Common.Extensions.TaskExtensions.<CancelIf>d__16.MoveNext() in CancelIf.il:line IL_0126 mvid 4CFC
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in RunInternal.il:line IL_0079 mvid 3020
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in Run.il:line IL_0009 mvid 3020 or Run.il:line IL_0034 mvid 3020
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run() in Run.il:line IL_0024 mvid 3020
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(Action action, Boolean allowInlining, Task& currentTask) in RunOrScheduleAction.il:line IL_001C mvid 3020
at System.Threading.Tasks.Task.FinishContinuations() in FinishContinuations.il:line IL_0085 mvid 3020 or FinishContinuations.il:line IL_0099 mvid 3020
at System.Threading.Tasks.Task`1.TrySetResult(TResult result) in TrySetResult.il:line IL_0055 mvid 3020
at System.Threading.Tasks.TaskFactory.CompleteOnInvokePromise.Invoke(Task completingTask) in Invoke.il:line IL_004A mvid 3020
at System.Threading.Tasks.Task.FinishContinuations() in FinishContinuations.il:line IL_0085 mvid 3020 or FinishContinuations.il:line IL_0099 mvid 3020
at System.Threading.Tasks.Task.Finish(Boolean bUserDelegateExecuted) in Finish.il:line IL_0085 mvid 3020
at System.Threading.Tasks.Task`1.TrySetException(Object exceptionObject) in TrySetException.il:line IL_002A mvid 3020
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception) in SetException.il:line IL_0026 mvid 3020
at JetBrains.ReSharper.UnitTestFramework.Common.Extensions.TaskExtensions.<ThrowIf>d__13`1.MoveNext() in ThrowIf.il:line IL_0118 mvid 4CFC
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in RunInternal.il:line IL_0079 mvid 3020
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in Run.il:line IL_0009 mvid 3020 or Run.il:line IL_0034 mvid 3020
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run() in Run.il:line IL_0024 mvid 3020
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(Action action, Boolean allowInlining, Task& currentTask) in RunOrScheduleAction.il:line IL_001C mvid 3020
at System.Threading.Tasks.Task.FinishContinuations() in FinishContinuations.il:line IL_0085 mvid 3020 or FinishContinuations.il:line IL_0099 mvid 3020
at System.Threading.Tasks.Task`1.TrySetResult(TResult result) in TrySetResult.il:line IL_0055 mvid 3020
at System.Threading.Tasks.TaskFactory.CompleteOnInvokePromise.Invoke(Task completingTask) in Invoke.il:line IL_004A mvid 3020
at System.Threading.Tasks.Task.FinishContinuations() in FinishContinuations.il:line IL_0085 mvid 3020 or FinishContinuations.il:line IL_0099 mvid 3020
at System.Threading.Tasks.Task.Finish(Boolean bUserDelegateExecuted) in Finish.il:line IL_0085 mvid 3020
at System.Threading.Tasks.Task`1.TrySetException(Object exceptionObject) in TrySetException.il:line IL_002A mvid 3020
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception) in SetException.il:line IL_0026 mvid 3020
at JetBrains.ReSharper.UnitTestFramework.Execution.TestRunner.TestRunnerAgentManager.TestRunnerExecutionAgent.<<RunTests>b__8_1>d.MoveNext() in RunTests.il:line IL_00AE mvid 4CFC or RunTests.il:line IL_02D6 mvid 4CFC
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in RunInternal.il:line IL_0079 mvid 3020
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in Run.il:line IL_0009 mvid 3020 or Run.il:line IL_0034 mvid 3020
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run() in Run.il:line IL_0024 mvid 3020
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(Action action, Boolean allowInlining, Task& currentTask) in RunOrScheduleAction.il:line IL_001C mvid 3020
at System.Threading.Tasks.Task.FinishContinuations() in FinishContinuations.il:line IL_0085 mvid 3020 or FinishContinuations.il:line IL_0099 mvid 3020
at System.Threading.Tasks.Task.Finish(Boolean bUserDelegateExecuted) in Finish.il:line IL_0085 mvid 3020
at System.Threading.Tasks.Task`1.TrySetException(Object exceptionObject) in TrySetException.il:line IL_002A mvid 3020
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception) in SetException.il:line IL_0026 mvid 3020
at JetBrains.ReSharper.UnitTestFramework.Execution.TestRunner.Activation.ServerMessageBroker.<SendMessage>d__2.MoveNext() in SendMessage.il:line IL_0077 mvid 4CFC
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in RunInternal.il:line IL_0079 mvid 3020
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in Run.il:line IL_0009 mvid 3020 or Run.il:line IL_0034 mvid 3020
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run() in Run.il:line IL_0024 mvid 3020
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(Action action, Boolean allowInlining, Task& currentTask) in RunOrScheduleAction.il:line IL_001C mvid 3020
at System.Threading.Tasks.Task.FinishContinuations() in FinishContinuations.il:line IL_0085 mvid 3020 or FinishContinuations.il:line IL_0099 mvid 3020
at System.Threading.Tasks.Task.Finish(Boolean bUserDelegateExecuted) in Finish.il:line IL_0085 mvid 3020
at System.Threading.Tasks.Task`1.TrySetException(Object exceptionObject) in TrySetException.il:line IL_002A mvid 3020
at System.Threading.Tasks.TaskCompletionSource`1.TrySetException(Exception exception) in TrySetException.il:line IL_000E mvid 3020
at System.Threading.Tasks.TaskCompletionSource`1.SetException(Exception exception) in SetException.il:line IL_000E mvid 3020
at JetBrains.Collections.Viewable.SignalBase`1.Fire(T value) in Fire.il:line IL_0028 mvid B12F
at JetBrains.Collections.Viewable.WriteOnceProperty`1.WriteOnceSignal.Fire(T value) in Fire.il:line IL_0000 mvid B12F
at JetBrains.Collections.Viewable.WriteOnceProperty`1.SetIfEmpty(T newValue) in SetIfEmpty.il:line IL_0046 mvid B12F
at JetBrains.Rd.Tasks.WiredRdTask`2.CallSite.<>c__DisplayClass5_0.<OnWireReceived>b__0() in CallSite.il:line IL_0000 mvid 25B3
at JetBrains.Rd.Impl.MessageBroker.RdWireableDispatchHelper.<>c__DisplayClass12_0.<DoDispatch>b__0() in RdWireableDispatchHelper.il:line IL_008B mvid 25B3
at JetBrains.Rd.Impl.MessageBroker.RdWireableDispatchHelper.DoDispatch(Lifetime lifetime, IScheduler scheduler, Action action) in DoDispatch.il:line IL_00C2 mvid 25B3
at JetBrains.Rd.Tasks.WiredRdTask`2.CallSite.OnWireReceived(IProtocol proto, SerializationCtx ctx, UnsafeReader reader, IRdWireableDispatchHelper dispatchHelper) in OnWireReceived.il:line IL_015C mvid 25B3
at JetBrains.Rd.Tasks.WiredRdTask`2.OnWireReceived(UnsafeReader reader, IRdWireableDispatchHelper dispatchHelper) in OnWireReceived.il:line IL_007B mvid 25B3
at JetBrains.Rd.Impl.MessageBroker.DispatchImpl(Byte[] msg) in DispatchImpl.il:line IL_0112 mvid 25B3
at JetBrains.Rd.Impl.MessageBroker.Dispatch(Byte[] msg) in Dispatch.il:line IL_003F mvid 25B3
at JetBrains.Diagnostics.LogEx.Catch(ILog log, Action action) in Catch.il:line IL_0000 mvid B12F
at JetBrains.Rd.Impl.SocketWire.Base.ReadMsg() in ReadMsg.il:line IL_00C8 mvid 25B3
at JetBrains.Rd.Impl.SocketWire.Base.ReceiverProc(Socket socket) in ReceiverProc.il:line IL_006C mvid 25B3
at JetBrains.Rd.Impl.SocketWire.Base.<>c__DisplayClass19_0.<.ctor>b__1(Socket socket) in Base.il:line IL_005C mvid 25B3
at JetBrains.Collections.Viewable.SignalBase`1.Fire(T value) in Fire.il:line IL_0028 mvid B12F
at JetBrains.Collections.Viewable.ViewableProperty`1.set_Value(T value)
at JetBrains.Rd.Impl.SocketWire.Server.<>c__DisplayClass4_0.<StartServerSocket>b__1() in Server.il:line IL_002F mvid 25B3 or Server.il:line IL_00F6 mvid 25B3
at JetBrains.Diagnostics.LogEx.Catch(ILog log, Action action) in Catch.il:line IL_0000 mvid B12F
at JetBrains.Rd.Impl.SocketWire.Server.<>c__DisplayClass4_0.<StartServerSocket>b__0() in Server.il:line IL_002F mvid 25B3 or Server.il:line IL_00F6 mvid 25B3
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in RunInternal.il:line IL_0079 mvid 3020
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) in Run.il:line IL_0009 mvid 3020 or Run.il:line IL_0034 mvid 3020
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) in Run.il:line IL_0009 mvid 3020 or Run.il:line IL_0034 mvid 3020
at System.Threading.ThreadHelper.ThreadStart() in ThreadStart.il:line IL_002A mvid 3020
”
ExceptionPath = Root
ClassName = JetBrains.Util.LoggerException
HResult = COR_E_APPLICATION=80131600

Tom Luo

Created November 24, 2025 13:47

Hello Patrick,

Thanks for contacting JetBrains support.

Based on my test, nunit.engine.api assembly built on .NET Standard 2.0 should work without issues. I have encountered a similar issue which was resolved by repairing dotCover. Could you please try repairing dotCover first?

If the issue persists, please provide the following details to help us investigate the issue:

The previous ReSharper version that worked for you.
Follow How to get dotCover logs to capture dotCover logs("dotcover core" log is not required at this time).
Exact version of the test framework you're using.
If possible, a copy of your .csproj file, which would help us reproduce the scenario on our end

You can upload the files to the Upload Service and share the Upload ID.
Please don’t hesitate to let me know if you run into any difficulties while collecting this information. I’m here to help!

Thanks,

Tom

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