I've been rendering Instance cryptomattes and they work fine in AE, but as we know the colours change randomly.
I tried rendering Geometry Node Name cryptomattes (with default settings) but in AE it crashes the software when RAM previewing and during render. It will preview a few frames before crashing with no error message.
I tried process of elimination and it's definitely these EXRs with the Geometry Node Name cryptomatte effect causing the crashes. the same C4D scene with Instance cryptomattes work fine in AE.
I managed to get a Dump file from AE but I dont know how to open/read it.