I have rendered out 330 frames as png files into a sequence that can loop. I brought the group of files into PPCS4 as a sequence and copy/pasted it 3 times on my timeline. I rendered it out a couple time last night and this morning as a WMV just fine. Now when I try to render the video out as any format (WMV, Quicktime, H.264) it starts and goes through about the first 25% then it stops. It says it is still encoding, but it isn't doing anything.
I have rebooted 3 times. Same results each time. This is very frustrating.