Pro tools HDX Card suddenly invisible

Out of nothing, Pro Tools loads with error -6001.





system:





- Avid HDX with 2 x blue 192

- Mac Pro 4.1 with 26 Gb Ram

- Mac OS Snow Leopard

- Pro Tools 10.3.8



My HDX Card disappeared in the Audio Core Manger Window, and Pro Tools won't let me find it (hitting M while launching).



I am really frustrated, since I hope it did not break down.

Digitest can't find it either.



Have tried to:



- built it out and in again

- reinstalled the Avid Pro tools audio driver







Any ideas? really urgent!





thx,



eike