Experiencing the same issue as PBSlaughter. Used the debug Scripts.rxdata once, file loaded up fine, saved and exited, got an error message, closed the whole game down, tried reopening, got this error message. Even after replacing with the original Scripts.rxdata file, as well as the one you linked in your last reply, the issue persists.
EDIT: I redownloaded V12 entirely and the game opened as normal. But if I use the game.exe from my original download, even after reopening with the new V12 file, it still gives the same error message.