...because when it didn't close the files down successfully (same as before), but it also didn't give me a choice when I load up the files manually whether I wanted to keep the changes. For now, I can modify the files and then open them up in Excel. I'm having to go in a manually change a few things that anyhow, so it's no time burner.
Will try to fix it one of these days. Saw [link|http://mail.python.org/pipermail/python-win32/2002-October/000528.html|Someone Else] had a similar problem in Python.