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've met the same problem

1.you can delete the App directy under

~/Library/Application Support/iPhone Simulator/6.0/Applications

and

~/Library/Developer/Xcode/DerivedData

2.then you can start Xcode ; in the menubar you can find Project -> Clean

EDIT: before copy/pasting 1 above change the Simulator Version to what you are using!