This just started happening to me too! But I can’t even get it to play. It creates the RAM preview but then just sits there. Very frustrating. I deleted preferences, restarted, changed preferences to different settings…all to no avail. Even the workaround mentioned isn’t working for me. Any further suggestions?
2 x 2.8GHz Quad-Core Intel Xeon
NVIDIA GeForce 8800 GT
10GB RAM