@TheRhino Sounds good. I had a near miss today, using VP17, against my own better judgement. I’ve been re doing these very small, old projects. Had a 20 minute rendered out file with 2 black pieces, about 2 seconds long each. Long story short, it fixed itself, absolutely no idea, I thought i’d have to do a copy and paste to vp16.

Yes, I had the same V17 render-to-black issue when I was trying to figure-out what was up & just rendering shorter segments as tests... About 2-3 seconds here & there.... I had the SAME issue way back with 10d until the 10e fix... Random black segments... Try to explain that to a client... They are not always easy to find, especially if the client wanted a quick change elsewhere & the black scenes appear where it was previously fine... IMO V12 & V15 have been the most reliable...

@TheRhino What I got out of this experience was valuable though, sure, 99% of everyone on the planet have been doing it, but it took this incident to waken me up.

I was lucky that I didn’t immediately go away from the PC while it was rendering and it was then I noticed the first black piece.

I then realised that maybe there were more pieces elsewhere in the rendered output that might be affected, so set about watching the whole 20 minutes, in real time.

There weren’t any more. I normally play a few parts of a rendered output here and there to confirm everything looks ok, but I realised that that wouldn’t be good enough to catch very small black sections like this. There had to be a better way. So I found the fast playback in the vlc player, way to go, about 4x was fast but still not too fast to miss the 2 second pieces.

Going forward, no pun intended, this is what i’ll do from now on.