.NET Runtime error when exiting Studio 10.2

[malkishtini at gmail.com]

Good day team,
We have a C++ external that we use as a .NET bridge between O7/Classic and dotnet dlls.
After converting to studio 10.2, we complied the C++ external to be 64 bits compatible and then we started deploying it in the External folder of Studio to main the same functionality as in Classic.
The external is loaded fine, and it seems to be functioning as well (so far).

The only issue we have now is once we exit Omnis, we get an error message "Exception Processing Message 0xc0000005 - Unexpected parameters."
I checked the windows event viewer and I see the error below:

 Application: omnis.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an internal error in the .NET Runtime at IP 00007FF9BCD589E3 (00007FF9BCC80000) with exit code 80131506.

I googled this error, and I found some posts about the same error which are suggesting to disable the Concurrent Garbage Collection in .NET Runtime.
Since I'm new to such errors, I want to make sure that I'm searching in the right direction, that's why I thought to check with the list, especially those who build xcomp and externals C++ objects to see if anyone has any idea about this error and know how we can get around it.

Thank you,
 Mayada