Any reason why the computer keyboard would suddenly stop working in Sonar?  The VS-700 Console still works, the mouse still works, and the kyboard works in other applications outside of Sonar.  Si there some weird Sonar function that tunrs the computer keyboard off?  Thanks.

My keyboard has been erratic since X2a came out.  Are you wireless?  Maybe Sonar uses more juice than other programs.

Seems to me like it has to do with a USB port assuming you're using a USB keyboard or wireless keyboard connected to a receiver plugged into USB. If wireless, try resync'ing the keyboard to the USB receiver. Usually there's a button on the receiver that you press and then press the button on the keyboard (at least that's how it works with a wireless mouse). 

Yes, I am using a wireless Bluetooth keyboard and mouse.  The mouse is more reliable than the keyboard even though it is farther away from the receiver.

Did you try pairing it up again?