Forgive me. I'm just stressing hardcore at the moment.
Specs:
OS X 10.9.4
2.8 GHz intel
Premiere 5.5
exporting cell phone video which has been treated with effects and layered with other clips from cell phone video, then nested as one single video clip, now trying to export as H.264 (DV 24fps)
Full disclosure: I am an amateur so if you need more info just tell me and I'll produce it if I can. I should note though, I've done this before with no problem. However the settings may have been different (still getting the hang of the whole 'settings' thing, to be honest). It's very possible that the problem in this case is the operator, in other words.