@thecargocult I’m getting this now, running MB 1.5.19 on Big Sur. I’ve tried with scripting on and with it off. The framerates are correct. There are custom keyboard commands, but the thing is it gets about halfway through the reel and then seems to crash PT at one particular area… I’ve done matches with video, with guide tracks, with edls… tried all sorts of different ways… it works until around the same spot… I can’t see anything in the session that would be causing an issue in the area… I have all folders open, everything displayed… any ideas?