[Joe Ross]

One thing to keep in mind is that telop.vi is called 50 times a second by robot main. Thus, 50 times a second you are opening robot drive. If it works at all, I'd expect a lot of error messages in the diagnostics window of the driver station.

If Robot Drive VIs are only going to be used in telop, you could open robot drive in the init case of telop.vi and use feedback to save the device reference. However, this becomes cumbersome if you have a lot of devices, or if you want to access them other places (such as autonomous).

The better thing to do is put your open in begin.vi, and then set the device reference. In telop.vi, you can get the device reference and then use it.