I’ve had the same issue all day. Funny thing is that my comp is only 10 seconds; the crash and pop-up occurs around 8 seconds of render. The same project worked fine yesterday…pre upgrade. Also, has anyone noticed how the Sorenson and Sorenson 3 codecs are unavailable for export in FCP? I say good riddance, but some of my clients still have older systems to view and sorenson is the only thing that works!