Well, some scripts require you (for some reason) to delete default scripts and put in the custom scripts in their place. Since you haven't worked on the game for a while, it's possible that this is the case. Replace the entire scripts.rxdata file with a clean one from a new project. Check that out - if there is still an error, ask for a clean one in this topic and we'll give you one that ought to work. If that doesn't work, well then you'll probably need to reinstall the program. In any case, if along the way you do get a working game, try introducing each script in one by one and see where the error occurs.