M-Audio Firewire Solo and Pro Tools Not Working?

Question by Shaun: M-Audio Firewire Solo and Pro Tools Not Working?
It has worked before, now I have two problems. I have Vista Ultimate 64-bit. I installed the Solo like the instructions said and then installed Pro Tools like the instructions said. On my Solo Control Panel, it shows the monitoring when I play the guitar but I hear no sound.
The second problem is the fact that Pro Tools gives me this error: "Unable to locate M-Audio hardware. Make sure your hardware is connected and turned

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