Okay, I found what the problem was. Seems that ProAnimator creates a file with the same name and extension plus ".#res".
So a file named test_logo.mov would have an accompanying file named test_logo.mov.#res. In order the player to recognize the file the .#res file has to be in the same folder.
When exporting from quicktime, you can either save as a self-contained, or edit file. Perhaps proanim is picking up on this. So the proanim is essentially exporting an "edit" file and leaving the resources for the file as the .#res file?
Depends on size of .mov file - if it's tiny, then good chance ^^^ is true. You could open it up in quicktime, and then export as self-contained and then it would be more transportable.
DOn't have experience with proanim - so just guessing here