Just a thought Scotty, try remnaming the files the same as they are but all in lowercase. UNIX can be a bit odd like that. We use AFPS at work so that a lot of our File and Printer servers are UNIX even though you log onto a Windows PC. If a file contains any uppercase characters, you can't see them through windows file mapping, even though they are there when you check it on a UNIX session.
A bit of a long shot, but it is worth testing...