Hi Matt! Did you ever find out exactly what is causing this? I could’t tell from the responses.
I am having the same problem. I use multicam and I am doing some color corrections and editing to the footage after I have made it a multicam. I have never had this happen before and I do this type of editing all the time.
And I actually have a section of the video that is black and it either re-renders over and over again (with no change to the video) or the orange line just sits above the footage and the footage remains black. My audio is there as well.
Any help would be great! Thanks so much!