Reading through the bug fixes on version 5.02 I see this line in the Read me. "Unable to export timeline image via IEEE1394 when Mercury GPU acceleration is used". as one of the fixes.
I took this to mean that they have resolved the playing back to an external montitor issue, but still doesnt work on my system? Any one else got it to work? If that is what it means.
Look again; that's under the Known Issues section. Translation: it's still busted.
Thought I may have been to optimistic... Thanks for the confirmation.