Digitest error DSI -1175?

Hi all,

Posted already about this (my HDX system can't see my Avid HD I/O interfaces), but ran Digitest today and it reported the error: DSI error -1175

Anybody know what that might mean? Is there a list of the error codes anywhere?

Thanks!

Tom Griesgraber
Attempting to run:
Mac mini (2018) 3.2GHz 6-Core i7
Mac OS 10.15.6
64GB RAM
Pro Tools 2020.9.1, HD driver 2020.9.0
one HDX card in a Sonnet Echo Express III-D Thunderbolt 3 HDX version