FCPX blanks in timeline, had to force quit, no change
Imported some clips to a library, added some to timeline... I can skim through and the video looks fine, but the timeline does not show the clips... shows the audio waveform, but not the images... there are just blue rectangles where the clips should be (see screen shot). The project was basically finished, so I exported the file and it looks fine. I tried to quit and restart FCPX but got a dialogue box that said "completing background tasks" but there were no background tasks occurring. Tried to quit, and had to "force quit." Restarted computer, restarted FCPX, still have blanks in the timeline.
iMac (27-inch, Late 2013), OS X Mavericks (10.9.4)