I had the "driver error" issue that is covered in the trouble-shooting section under Bluetooth:
Problem: You can pair the Twiddler in the Bluetooth Neighborhood but get a “Driver Error” once paired. Twiddler works fine if connected via USB.
Solution: Reset Twiddler's Bluetooth pair table by typing T14F1R. You will also need to re-pair the Twiddler with any other device you have paired with in the past.
I believe that the correct chord is T14F4R, not T14F1R. That is what worked for me, anyway.
