Quote Originally Posted by rsocor01 View Post
I have a U2 programmer too, but I've never had that problem. Are you doing ICP? If you don't have a solid connection between the programmer and the chip, you get "Lost USB Connection" errors. What kind of setup do you have?

Robert
Yes we use ICP and we have a good solid connection. We use pin headers for programming all out boards. We try to not use the programming pins for i/o as much as possible but sometimes it is necessary but when we do we usually isolate the pin with a 10k resistor.
It seems to be a random problem.