I have been using the AE render queue for exports when AME fails. It takes a lot longer, and I haven’t found a way in the current AE version to export as mp4 instead of .mov. So, not ideal, but it gets the job done. As I mentioned, that’s been my workaround so far — I export from AE render queue as mov file using H264 codec, then I take that rendered video and use AME to transfer it to mp4. A big waste of time, it’s adding a lot of sit-around-and-wait hours to my projects.
I have cleaned out all the caches in both AE and AME, this seems to make no difference.
I did not try changing formats in AME yet, I will add that to my troubleshooting (after this set of deadlines — one of those other formats won’t really help me at the moment, I need the destination product to be a small file)
AME is still performing about 50% of these project files correctly, and failing the rest. I’m still stumped as to what’s different between files, I can’t see any difference in how they’re created!