topic Re: Managed Debugging Assistant 'FatalExecutionEngineError' in Revit API Forum

Managed Debugging Assistant 'FatalExecutionEngineError'

info25S94 — Mon, 02 Mar 2020 09:41:22 GMT

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

Re: Managed Debugging Assistant 'FatalExecutionEngineError'

naveen.kumar.t — Mon, 02 Mar 2020 09:51:04 GMT

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

Re: Managed Debugging Assistant 'FatalExecutionEngineError'

info25S94 — Mon, 02 Mar 2020 11:51:28 GMT

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

Re: Managed Debugging Assistant 'FatalExecutionEngineError'

info25S94 — Tue, 03 Mar 2020 09:39:51 GMT

Can anyone help?

Re: Managed Debugging Assistant 'FatalExecutionEngineError'

Anonymous — Sun, 05 Apr 2020 06:33:56 GMT

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

Re: Managed Debugging Assistant 'FatalExecutionEngineError'

Anonymous — Mon, 21 Jun 2021 12:32:36 GMT

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

Re: Managed Debugging Assistant 'FatalExecutionEngineError'

luisPDAN6 — Fri, 08 Oct 2021 08:18:02 GMT

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...