FCPX - Multiclip - When set from proxy to original, video is black
FCPX, latest version. Did a 3 camera shoot, Canon HFG20. Imported video, transcoded, edited in multiclip using proxy. Everything looks fine. When I switch back to Original, Best Quality, one of the three angles is black. Switch back to proxy, I see all the angles. Want to export in the high quality. Any ideas as to why this is happening? Thanks in advance.
iMac, OS X Yosemite (10.10.4)