The first time this happened I assumed it was some sort of glitch..... now this one got me mad.
I have a sequence with 3 intro title screens over a black background. All titles were created in the Title Editor. There is a fade in, fade out on each of the three titles.
I imported this part of the sequence from a project that another editor worked on, and all initialy seemed OK.
However, when I exported the sequence the titles were missing and all I got were black frames. I went back to check the sequence for playback and the fades we now missing (they are present but have no efect) but at least the titles showed.
I re-tried exporting and still the titles were missing!
I double clicked on the titles to load them back in to the editor then closed the editor. Now everything works (including fades) on playback AND export.
This just cost me 9 hours of rendering I didn't really have time to waste, and as I said it's not the first time it's happened.
Any ideas what could cause this? And yes I'll submit a bug report, but has any one else seen this problem?