LIVE button producing nothing

It’s with great pain that I post this because it feels like a terribly Newbie problem and I’ve used N-Track for a couple of years now-- just not for live multi-track recording. However, I’ve looked through the manual and the forums and I’m still stuck. When I click on the LIVE button I don’t hear my input. It’s reading on the meters; it records, but I can’t get it to monitor my input. I’ve tried it both with the computer input and with a USB input device.

I’m using a laptop (which I know isn’t the best, power-wise), N-Track v6, Windows VISTA with running 2GHz with 3GB of RAM and plenty of hard drive space.

Thanks for being gentle…

Well, now it’s working for me after a restart. Perhaps a communication error with my USB device.