Well my Virus TI works fine using the Kanex adapter thunderbolt to USB adapter - no error message any more. But to be honest, I've been told by Access that i can just ignore that message anyway, so i'mm gonna try using it without teh adapter to see if it runs better. coz i noticed it seems to crash cubase more now. Not sure if that's related but maybe.
i'm gonna use my thunderbolt port for my Motu 828x instead and use the USb for Virus TI and just ignore the dumb message that comes up every time.
I'd also like to mention - changing the buffer setting on my soundacard seemed to fix the timing issues (nearly). Still has a horrible latency when playing keys. And the arp goes out of time over long notes, which is ridiculous. I seriously cannot understand how an old technology like MIDI can not work just as well over USB? Hello Access??