Your recent post looks like the script is no longer from the one-click script library.  I think you mentioned multiple games -- do you have different versions of the script, or did you replace this one?    The error message also references "custom sheet." Are you using a custom character sheet?  I don't know why that would interact with the script though.  One other way to cheat this maybe -- create a new game from scratch, add the script, and then use the transmogrifier to move everything -- maps, characters, handouts -- to the new game.