Recompile of game code corrupts editor build

Development Platform & Builds Mobile
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1

I am using UE4 from source.

I have upgraded from 4.19.2 to 4.22.0

Since the upgrade I have conflict when compiling game solution via Visual Studio (2017 or 2019).

When I compile game solution (Visual Studio) it triggers recompile of the UE4Editor project, which then causes this problem when opening .uproject

275159-error02.png

When UE4Editor.exe is launched directly this problem comes up:

275160-error01.png

Everything starts to work fine when I recompile Editor solution and open a .uproject - I can edit C++ code and compile from editor, but the same problems come up when game project is recompiled from Visual Studio game solution (which in turns causes UE4Editor project to recompile also).

I am at wits end on how to troubleshoot this. This was not happening in 4.19.2. Any ideas would be appreciated.

2

Just to update, for future reference.

The problem was that the editor would compile with different toolchain than Visual Studio would. 2017 vs 2019. Once that was resolved - the problem disappeared.

There is a helpful guide here that helped me resolve this eventually: