You might have an older version of SCMDraft that's not very stable. Try downloading the one here: http://www.staredit.net/topic/8307/ and see if that fixes the problem.
UndeadStar -- https://staredit.net/topic/18961/ <= wow, if there wasn't a capital letter on almost every word in the title, and a link in the signature, I may not have guesses it's an AI bot. I don't know much about map editing, but the content may even be relevant enough to be kept.