FRC driver station issue with robot code

[icq10]

We are about to test our robot, but we have a problem with the FRC driver station.

We are able to build and deploy our code onto the robot. When we start the driver station the robot is connected. But of the 3 status lights on the control the "robot code" is lit up in red. In order that it gets green, we have to go to our project and run our Robot Main.vi
Then it deploys the code again and everything works fine.

Why is the "robot code" status light not immediately green?

Thanks