I tried previewing my finished footage on the "digital cinema desktop preview" in fcp 5.1 option and it wont play. it'll scrub fine but when I push play it freeze frames on the last frame it was stopped. I tried going to external video and clicking "all frames" and it's selected. does anyone else have this problem? i dont know if it matters but it's a dvcpro 720 24p timeline with dvcpro footage.