Managed Debugging Assistant 'FatalExecutionEngineError'

[info25S94]

I get the following error, when I'm trying to debug revit add-in using visual studio:

[naveen.kumar.t]

Hi @info25S94 ,

Try using the steps mentioned in the below links

https://forums.autodesk.com/t5/revit-api-forum/revit-crashes-on-debug-mode/td-p/9086798 

https://stackoverflow.com/questions/31451431/managed-debugging-assistant-

fatalexecutionengineerror https://forums.autodesk.com/t5/revit-api-forum/advice-on-debugging-c-in-visual-studio/td-p/6496811 

https://forums.autodesk.com/t5/revit-api-forum/advice-on-debugging-c-in-visual-studio/td-p/6496811 

[info25S94]

Nothing of these solved my issue. The same problem still exist.

[info25S94]

Can anyone help?

[Anonymous]

I have the same problem and it didn't work from me too.

[Anonymous]

none of these worked for me too... Any other updates on this?

[luisPDAN6]

If there is another plugin loading in Revit and that was not compiled as release, but as debug, we may also get this error as "Just my code" is selected.

'Revit.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Program Files\Toolbox\Toolbox.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Managed Debugging Assistant 'FatalExecutionEngineError'

Removing the other plugin then solves the issue and Revit loads correctly. My conclusion is that it can only be 1 plugin compiled as debug if the "Just my code" is enabled. And that option is important otherwise we get exceptions of all the other plugins...