Xcode swift failed with exit code 254

Question

I am getting this compiler error in my code and I can\'t figure out why:

:0: error: unable to execute command: Segmentation fault: 11


        

Answer 1

For the sake of providing other possible causes and how to fix them; I was trying to set the region of a map view within in dispatch block. If I commented out the setting of the region, the error goes away.

    dispatch_once(¢erMapLocation, {
//                var theSpan: MKCoordinateSpan = MKCoordinateSpanMake(0.01, 0.01)
//                var theRegion: MKCoordinateRegion = MKCoordinateRegionMake(manager.location.coordinate, theSpan)
//                self.map.setRegion(theRegion, animated: true)
                })
        }