USB: no HUB, and it worked before with previous OS versions.
MIDI: Motu 828 and Motu Micro express. I’ve just tried, C6 exits and chunk size error.

I even try reuploading some samples that are already in, now they get a chunk size error too.

I can still send some samples, but not all…

I think it’s an OS issue, I’ll contact the support.