I echo what arizonafoxx stated, but add another possible scenario. At the beginning of the season, we flashed our laptop with the 2012 version of the software. However, the 3 updates made available after kickoff were NOT applied. These included updates for Labview, Utilities and the Driver Station. The students used this computer to flash the cRIO, build, and deploy the default code. The default code was edited slightly to include a 4 motor drive system and Arcade drive. Result? The robot ran with no problems!
However, when we tried to add a motor just as you claim, then nothing would work! Not even the drive motors. Weird stuff.
But, installing the 3 updates to the computer, re-imaging the cRIO, and re-compiling the code fixed the failure we encountered and all is well now.
