It would seem that, in certain cases, some Object movies do not get flattened properly. Therefore, Knut is correct, you will need to flatten it manually. This has already been adjusted for version 3.0. The flattening application can be found by searching the web. Tip Don't open the flattened movie on a Mac that you will copy to the Zip disk because programs like MoviePlayer will in some cases automatically add the resource fork to the file.
Pro version has a utility that also flattens the movie.
The thing I still can't figure out is why the PC will read the mov file from its original location, but not if moved to another drive. When writing to CD, I forgot to convert all file names to capital letters, even when the naming was according to the DOS 8.3 rules. It has to be some kind of explanation like this for a file to play in its original location, but not when moved. The Mac OS recognizes both forks of information where the Windows OS only recognizes the Windows fork. When you flatten a QuickTime movie it creates one data stream with all the information on the Windows fork.