Tried the latest beta version but can't attach to any application.
dotTrace starts the application no problem but stays at the "Connecting" state.
Checked the help and tried the RegSvr32.dll suggestion for JetBrains.dotTrace.Core.ia32.dll but get a "LoadLibrary("JetBrains.dotTrace.Core.ia32.dll") failed - This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem." message.
Have uninstalled and reinstalled - exactly the same.
Also tried the Profile Sample Application - exactly the same.