We have a TVA50 Voice Mail system that accompanies our TA824 Phone System. The systems themselves are working fine, but we are just now having trouble connecting to our system with the KX-TVA Maintenance Console: every time we do Connect > USB, it gives the following error:
The system cannot find any USB device connected to your computer.

I'm not sure what happened - we haven't knowingly changed anything, and it worked fine before. We've tried reinstalling the Console and driver, and also restarting the computer, but none of that solved the problem. Suggestions on how to fix this?