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 tried everything metioned here. Nothing worked. It seems that I somehow imported the Info.plist twice. To fix it I selected the project and pressed the "Validate Settings" button. Afterwards it works for me.