I have reported this on several threads over several months, but it is still occurring. I believe Jordan and Glenn have worked on this, but I haven't heard anything in 3 or 4 weeks.
Any time I use video elements, the program crashes on my MacBook at some point after going on-air. I typically use Airplay with an Apple TV connected to the projector. I originally thought the crash only occurred when using AirPlay, but later discovered that it would also crash when wired to the projector with a VGA cable. However it might take longer to crash when connected via VGA cable. In any case, the speed at which the crash occurs depends on the number of video elements I try to use. I typically test it by placing from 1 to 15 video elements in the pre-service loop and going on-air. In past testing with 10 or 15 video elements in the pre-service loop, Proclaim would crash with 5 or 10 minutes. For today's test I added a single 1:38 video to the pre-service loop. This time the presentation ran through the pre-service loop for several hours before finally crashing. I can avoid using an excess of video elements, and can actually live with this time-between-crashing, but still believe the condition causing the crash should be fixed.
The usual logs are attached.
6443.2017-02-11 Proclaim Logs.zip
7002.Apple-Proclaim Crash.zip