"Robots don't quit!"

[Xanawatt]

I did not start this thread because we have a current problem; however, this error has popped up several times over the course of the season and we were always able to find what was causing it. What happens, for those unfamiliar with the error is that the robot code appears to deploy correctly, but when you start up driverstation, there is either no code, or there is code. When there appears to be code, starting teleop causes the code to crash and "Robots don't quit!" is printed to the driverstation error log. The code then turns green again and the same thing happens. We have determined that the cause of this error is that two or more objects are assigned to the same port on the roboRIO. From research, I have found that there are more reasons that this could be thrown. Can someone please explain exactly what "Robots don't quit!" means? Also, is the first scenario that I described part of this too or is that a completely different error?