RTI U1 Operation Manual page 16

If you are having problems with your U1, please read these
troubleshooting tips before contacting technical support.
If you continue to have problems, see Chapter 5 for more information
on contacting RTI technical support.
Verify that your PC is using Windows 2000 or higher. The
®
TheaterTouch Designer software requires a USB device driver that may
not be installed on earlier versions of Windows.
Make sure you are using the programming cable that was supplied
by RTI and that both ends are connected securely.
Make sure the PC detects the presence of the T2+. If it doesn't,
unplug the USB cable, wait for about ten seconds, and plug it in
again.
If the download fails after some data has been transferred, try re-
sending the program.
9