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Xcode Not Working Plz Help!

Hey i am trying to learn objective C/C, however when i write some code and run it, xcode says build sucsessful but the does not run the code, eventually it comes up saying process launch failed: invalid host string: '(null)', plz help. I have also already reinstalled it.

My code is the starting template that xcode gives you.

1 Answer

Are you sure you have Xcode 6, because this was a common problem for Xcode 5. Let me know.