Could you post a screenshot of your ‘content’ folder like I did above?
It should be empty except for a single MGCB file.
And that file should have that property set, like in my screenshot (buildaction = none).
Then the pipeline does nothing.
So the error should come from the game-runtime itself, trying to find an object-file and not finding it.
The error “The source file ‘filepath/.obj’ does not exist!” indicates that it searches a file without a name ?!
How’s that? Are you trying to load an empty name-string somewhere in your code?