Been a while since I used IPB but if you go to the ACP >>> Skin Manager, there should be some cleanup settings which might work, give those a go
I don't see any tools that would help clean it up without messing up the look of the skin. EDIT: if anyone that knows their way around IPB wants to try to help I can give them access to the acp.
Actually, I believe its because of the absence of some lang files, or else its calling for lang variables that aren't there.
Hmm yeah you are probably right. In which case you could try re-uploading the lang files....I'll tell you how on MSN if you don't know how.