If it is, then what is causing the problem. I have a few ideas.
- different versions of Moodle (mine and his--should I only share between servers with the same version of Moodle)
- bad backup procedure (I am doing it inside the course with course files attached, no users)
- bad zip moving (I backup in the course with course files attached, then find the zip file by FTP client, download to my desktop, then email to colleague)
- quiz links (maybe the quiz files have links to a site file location, not a course file location)
- quiz database screwup (I have moved these files and associated questions all around various servers, maybe some reference is making trouble)
Thanks for any advice! Hopefully, the answer is I made a mistake or that everything will be solved in version 1.5.