I have the same situation on my desktop and Lenovo Legion Go. I've been playing fine on both and have NEVER installed any mods. I've done the file integrity verify and it found no errors. However, the game and the Mod Manager both seem to run fine, but I get that error message every time on startup. I close it and start the game. Is it a bug where the system believes the new mod manager is an unsupported file or something? I has to be a glitch with Patch 7, but so far seems benign to me. @Larian


Deepblue