MacOS app does not run on the Xcode simulator

Question

I\'ve installed Xcode 4.2.1 on Mac OS X Lion.

When I create a new (Mac OS X Cocoa) project and I click \"Run\", Xcode says build succeeded, but does

Answer 1

I had the same issue in late 2017 with Xcode 9.2.

I had to uncheck 'Debug Executable' and then my app was able to both run and stop.

You can open the settings by clicking Product -> Scheme -> Edit Scheme...