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 had this issue after upgrading to Mountain Lion and XCode 4.4.1 for an OSX project. To resolve it, I had to upgrade my deployment target to 10.5 or higher; it was set to 10.4 and up.