Xcode 4 "waiting for process 'Appname' to launch

Question

I installed Xcode 4 and now cannot run one of my iPhone projects.

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Answer 1

Quit Xcode. Find the App_Name.xcodeproj, "Show Package Contents" and remove the folder "xcuserdata".

This will clean the "cache" of breakpoints. Start Xcode, compile and done :)