The given key was not present in the dictionary Follow
If you got the same error, try to disable server GC on your computer.
In order to do this, edit <app_name>.exe.config file:
If you profile IIS application you need to configure ASP.NET config file:
The Aspnet.config file is in the same directory as the Aspnet_isapi.dll file (for example: C:\Windows\Microsoft.NET\Framework64\v4.0.30319 ).
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In the case that IIS Express is being used, the aspnet.config file that should be modified will be in the same directory as the applicationhost.config file. For example, on my system the path to the appropriate configuration is C:\Users<user>\Documents\IISExpress\config\aspnet.config.
Thanks for the info!