I had an old code written in Swift2, running on OSX 10.11, which calls IORegistryEntrySearchCFProperty           if let session = DASessionCreate(nil) {             if let disk : DADisk = DADiskCreateFromVolumePath(nil, session, url as CFURL) {                 let ioService : io_service_t = DADiskCopyIOMedia(disk)                 let…

When I select a UIBarButton to go to the next screen, the app crashes on:   class AppDelegate: UIResponder, UIApplicationDelegate { with the error: 2017-10-07 18:22:12.033188-0400 AppName[3285:927126] -[tableView:numberOfRowsInSection:]: unrecognized selector sent to instance 0x131e5df80 2017-10-07 18:22:12.034135-0400 AppName[3285:927126] *** Terminating app due to uncaught exception ‘NSInvalidArgumentException’,…

When I push a UIBarButton in my app the app breaks at:   class AppDelegate: UIResponder, UIApplicationDelegate { with the error saying: 2017-10-07 18:22:12.033188-0400 App Name[3285:927126] -[ tableView:numberOfRowsInSection:]: unrecognized selector sent to instance 0x131e5df80 2017-10-07 18:22:12.034135-0400 App Name[3285:927126] *** Terminating app due to uncaught exception…