This is weird. I’d swear I tested each one of these, but I can’t get RomCheckFail to run from the warehouse either. And yet if I run it from SSH pointing to DISPLAY=:0, it works.
Speaking of which, everything in your log matches mine. Did the game not run even from SSH for you? It takes a little while to load and sits on a black screen, but mine did start up.
I still don’t know why it’s not working from the warehouse menu though. I need to spend some time on this and figure it out. The main difference between Gaurodan and RomCheckFail is that the files are in different places, with the RomCheckFail executable in the “bin” directory, and some libraries in “libs”. With Gaurodan, everything is in the same top level directory. But the path stuff in the script looks good, I think? I’m not sure what is going on.