Hello,I’m not sure if anyone can help but I am currently taking a robotics course and we are having trouble getting our VEX EDR to program. When we try to write our own program and send it to the cortex we lose communication between the robot and the controller, but when we use a default program we have good communication, any ideas on what we are doing wrong?

Flash the firmware on everything, the joysticks, VEXnet keys and the Cortex.