Hey Jean, thanks for the response!
Oddly, I did get everything to render on its own, but now I have a composition made up of only pre-rendered clips and 2 adjustment layers and it crashes about halfway through. All clips are the same frame rate and resolution.
One clip in particular seems to be causing it, so I’ll remove that and see what happens.
Rendering as a TIFF sequence looks interesting, I’ll look into that.