Yes -- DVD FAB PLAT 3 (called FAB hereafter) is picky with what drives it uses and specific types of connections, namely firewire.
If you are still having this problem, try a System Restore to the latest point when FAB was working. For a long time I dealt with FAB doing this as a result to a disc scan problem. Whenever FAB can't access a drive that it knows has media in it, it freezes. In fact, almost everytime (there are a few instances when an error message will pop up) FAB encounters a problem, it sits there, dumbfounded, and freezes. :a I had to change the drive connections from external firewire to all internal IDE (full tower and all) to get FAB to finally, finally, finally work. :doh: No problems since (at least not yet).
Keep us posted.