[MamaSpoldi]

Since I don't know anything about the structure of your code it is hard to guess what the problem is, but there is one possibility that you are sending the updates too frequently. We, for example, only update the SmartDashboard once every 10 loops (which are timed to be 0.02sec each). If you update too frequently it can cause a large delay which could cause a WatchDog error.

Are you deriving your robot class from SimpleRobot or IterativeRobot? How often are you updating the Dashboard?