Trouble with Native instruments Audio 10 & OSX LION

when I plug in my audio 10 device osx & native instruments don't find my device .

i tested it with another hdd on the same laptop - works fine -> so hardware & laptop work fine.

problem must be software based.

osx finds audio 10 in hardware profile. osx doesn't show it in audio-out profile.

green usb-connection led on audio 10 device is blinking green....

what can i do?...please help