Hmm it might be, I'll run a test here. Seems I got an error with a file that's no longer included in the game files. RPG Maker MZ's cache may be having an issue, so I'll see about getting a fresh file up. The error though happens when you game over from what I encountered here, so you should be able to get by, by pressing F5 to reset. But I'll work at getting that fixed up. I'm sorry about that! This has been giving us some weird issues ever since we started compiling it.