I have the steinberg project pack and I was recording for a while but then it suddenly stopped working on me.

The signal from my keys is coming thru because Im monitoring it and can hear it thru the output on my audiocard...
Line in is selected on the input selector... but when I press record in cubase everything works fine (and there is still sound coming thru) but there is nothing being recorded. Is there a simple solution to my problem?

Jids