I bought an Alesis io26 a couple of months ago, and in the beginning it worked fine. Now i don't seem to get any signal from the audio interface to my software. It gets power and every line in works, and it shows, but nothing on my Mac. I have tried to update drivers, but nothing improved. The light showing firewire connection worked in the beginning, but now it doesn't glow at all. I have never caused any physical damage to it, so there must be another problem. I appreciate any advice or help!