error: failed to attach to process ID 0

Question

I have been reading the forums and so far none of the solutions suggested works for me. I\'m running Xcode 4.4.1 and testing in iPhone 5.1 simulator. The simulator won\'t op

Answer 1

I had this problem because I had another user on the same machine running the iOS simulator. Logging in as the other user and quitting the simulator (and Xcode) solved it in my case.