so this is a good start. If you can reproduce the behavior, I need the debug logging from my mod, which should walk through the logic as it occurs and we can determine where the fail is. You might need to enable debug mode in the game itself first, so you can see the logs (a small button on the top of the screen w/ debug mode on).

After that, enable debug logging in my mod's options. You should start seeings prints when this mods checks occur. If you can trigger the error at that point, we'll have the stacktrace embedded with the info from my mod showing (hopefully) where it was called.