Yesterday we got our robot driving while tethered, and then after a code download it stopped working all together. We went back and pressed ctrl+z until the code was back to the way it had been and deployed, which fixed nothing

. We are using cpp. does anyone know how to get the debugger going while tethered (so, that you can drive on the classmate and watch the debugger somewhere at the same time)? Also, is there a component between the cRio and the jaguars (which are flashing yellow) which breaks often?
Thanks
Lemiant