Xcode Cannot Run on the Selected Destination

Question

I was running my app this morning and now all of a sudden I am getting the following error when I try to run on the iPhone 5.1 simulator.

Cannot run on the selected

Answer 1

I've got this problem after accidentally removing the Resources folder, when I added it again to the project, Bam !

I'm also running Mountain Lion and XCode 4.4 !

trying to find out what's causing this, but it seems to be reproduced when you delete then add the info.plist file ! can someone confirm that ?