I've seen you post in other threads saying that you couldn't get 4 cards to work at all. Is this the same setup? Is GPU-Z working for you now?
What did you do to fix that?
I've been having a lot of problems getting 4 GPUs working
I got all 4 to run by putting GPU's 1 and 2 in crossfire mode with a bridge. Suggestion by another forum post, and it worked. poclbm worked
I thought I was having this problem only on one computer, but I got the "connection problem" on my other dedicated miner that was identical, but it had been mining stable for 48 hours (although no GPU driver crash. just GUI miner for now)... I don't get why this is happening.
I've never seen the error before and its causing havoc lol