I've tried everything and I'm at a loss here. Games are refusing to import, showing the "Object reference not set to instance of an object" error message. Tried changing themes and repairing plugins, which did nothing. Tried updating MAME Software List Updater to 6.0.2 and that didn't work either. Games that are already imported seem to launch just fine.
This only started to happen after I updated. Logs are attached.
Debug 2024-09-22 09-23-54 PM.log
Debug 2024-09-22 09-18-45 PM.log
Debug 2024-09-22 09-18-43 PM.log