It could be a number of things but have you checked your sound or audio options - theck the output is set to your soundcard or if your midi keyboard has a build in s/card chek that it is assigned to that.
I take it you have installed the driver disk for your controller?? (I know its obvious, had to ask)
Have you selected and assigned an instrument to the track and it isn't muted or anything?
I seem to have cracked it and am able to use the controller with massive. But am unable to use it with native's fm8. I'm sure i must be able to use the controller with the fm8.
does any1 know the answer?