I've been struggling with this issue for months on my Macbook Pro. Every time I queue renders from After Effects and try to change export settings or render I get an error saying "could not read from source"
I have uninstalled and reinstalled ME and AE, all of creative cloud, and even reformatted my macbook several times. Same error. In need of a fix so I don't have to export in pro res from AE and then convert to h.264 in ME.
We're sorry for the trouble. We'll need more information to troubleshoot the dynamic link related issue between AE and AME.