Okay, so removing legacy data didn't work, so this time we'll try clearing the new data which may have copied over something broken in the old data. Open file explorer, enter"%appdata%" and hit enter. You may have to go up one folder level so you're in the appdata folder. Then in one of those local folders will be a kyuppin folder. Find that folder and in there delete the vTuberKitData.uwu file. Let me know if that helps!
