something's wrong & we have no clue what

when we run any of our programs (which we ran earlier, with issues), our cortex turns red & refuses to work. but when we stop running it, it turns green again. help, please!

Here’s a few things that solved the problems for us

  1. Have you established a VEXnet link yet?
  2. Is everything charged?
  3. Is there any coding errors?

You as the user cannot control whether, let alone when, your programs run… The extent of such control you have is no more than whether the Cortex is on or off.