I have been struggling with this error. My build succeeds but won't run. I've tried every suggestion I've ready in every article I could find and nothing has worked. This happens if I run it on the simulator or device. Any tips? ============================== The file “APP NAME” couldn’t be opened because you don’t have permission to view it. Domain: NSCocoaErrorDomain Code: 257 Failure Reason: You don’t have permission. Recovery Suggestion: To view or change permissions, select the item in the Finder and choose File > Get Info. User Info: {     NSFilePath = "/Users/Me/Library/Developer/Xcode/DerivedData/Main-ekzzcailcbrpykazzxdtbnpsjuhr/Build/Products/Debug-iphoneos/APP NAME.app"; } - The operation couldn’t be completed. Permission denied Domain: NSPOSIXErrorDomain Code: 13 Failure Reason: Permission denied