ICloud timeout. (using iCloud + Core Data + Magical Record

Question

I started a test application to use Core Data and iCloud (using Magical Records). After many problems to configure Provisioning Profiles and Permissions, the application finally starts. After a while, the application crashes and issues this message:

 2012-12-31 03:42:07.079 iCloudTest[252:1103] -[PFUbiquitySafeSaveFile waitForFileToUpload:](268): CoreData: Ubiquity: <PFUbiquityPeerReceipt: 0x1cd5a420>(0) permanentLocation: <PFUbiquityLocation: 0x1cd57b30>: /private/var/mobile/Library/Mobile Documents/MA5BADG5AW~com~gazapps~iCloudTest/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3/com.gazapps.iCloudTest/v8GumdiUYmkE0aO9iGtPTPHX07qqWk7kRytsQwHKjwU=/receipt.0.cdt safeLocation: <PFUbiquityLocation: 0x1cd57a80>: /private/var/mobile/Library/Mobile Documents/MA5BADG5AW~com~gazapps~iCloudTest/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3/com.gazapps.iCloudTest/v8GumdiUYmkE0aO9iGtPTPHX07qqWk7kRytsQwHKjwU=/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3.0.cdt currentLocation: <PFUbiquityLocation: 0x1cd57a80>: /private/var/mobile/Library/Mobile Documents/MA5BADG5AW~com~gazapps~iCloudTest/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3/com.gazapps.iCloudTest/v8GumdiUYmkE0aO9iGtPTPHX07qqWk7kRytsQwHKjwU=/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3.0.cdt kv: (null) Safe save failed for file, error: Error Domain=NSCocoaErrorDomain Code=512 "The file upload timed out." UserInfo=0x1cd5b7d0 {NSLocalizedDescription=The file upload timed out.} 2012-12-31 03:42:07.083 iCloudTest[252:1103] +[MagicalRecord(ErrorHandling) defaultErrorHandler:](0xe5ac0) Error: The file upload timed out. 2012-12-31 03:42:07.085 iCloudTest[252:1103] +[MagicalRecord(ErrorHandling) defaultErrorHandler:](0xe5ac0) Error Message: The file upload timed out. 2012-12-31 03:42:07.086 iCloudTest[252:1103] +[MagicalRecord(ErrorHandling) defaultErrorHandler:](0xe5ac0) Error Domain: NSCocoaErrorDomain 2012-12-31 03:42:07.087 iCloudTest[252:1103] +[MagicalRecord(ErrorHandling) defaultErrorHandler:](0xe5ac0) Recovery Suggestion: (null) 2012-12-31 03:42:07.089 iCloudTest[252:907] *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayI objectAtIndex:]: index 0 beyond bounds for empty array' *** First throw call stack: (0x3a7702a3 0x3465f97f 0x3a6bae8d 0xdd453 0x38a6311f 0x38a624b7 0x38a671bd 0x3a743f3b 0x3a6b6ebd 0x3a6b6d49 0x38a842eb 0x338f62f9 0xd101d 0x37f22b20) libc++abi.dylib: terminate called throwing an exception / private / var / mobile / Library / Mobile Documents / MA5BADG5AW ~ com ~ gazapps ~ iCloudTest / mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3 / com.gazapps.iCloudTest / v8GumdiUYmkE0aO9iGtPTPHX07qqWk7kRytsQwHKjwU = / receipt 2012-12-31 03:42:07.079 iCloudTest[252:1103] -[PFUbiquitySafeSaveFile waitForFileToUpload:](268): CoreData: Ubiquity: <PFUbiquityPeerReceipt: 0x1cd5a420>(0) permanentLocation: <PFUbiquityLocation: 0x1cd57b30>: /private/var/mobile/Library/Mobile Documents/MA5BADG5AW~com~gazapps~iCloudTest/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3/com.gazapps.iCloudTest/v8GumdiUYmkE0aO9iGtPTPHX07qqWk7kRytsQwHKjwU=/receipt.0.cdt safeLocation: <PFUbiquityLocation: 0x1cd57a80>: /private/var/mobile/Library/Mobile Documents/MA5BADG5AW~com~gazapps~iCloudTest/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3/com.gazapps.iCloudTest/v8GumdiUYmkE0aO9iGtPTPHX07qqWk7kRytsQwHKjwU=/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3.0.cdt currentLocation: <PFUbiquityLocation: 0x1cd57a80>: /private/var/mobile/Library/Mobile Documents/MA5BADG5AW~com~gazapps~iCloudTest/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3/com.gazapps.iCloudTest/v8GumdiUYmkE0aO9iGtPTPHX07qqWk7kRytsQwHKjwU=/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3.0.cdt kv: (null) Safe save failed for file, error: Error Domain=NSCocoaErrorDomain Code=512 "The file upload timed out." UserInfo=0x1cd5b7d0 {NSLocalizedDescription=The file upload timed out.} 2012-12-31 03:42:07.083 iCloudTest[252:1103] +[MagicalRecord(ErrorHandling) defaultErrorHandler:](0xe5ac0) Error: The file upload timed out. 2012-12-31 03:42:07.085 iCloudTest[252:1103] +[MagicalRecord(ErrorHandling) defaultErrorHandler:](0xe5ac0) Error Message: The file upload timed out. 2012-12-31 03:42:07.086 iCloudTest[252:1103] +[MagicalRecord(ErrorHandling) defaultErrorHandler:](0xe5ac0) Error Domain: NSCocoaErrorDomain 2012-12-31 03:42:07.087 iCloudTest[252:1103] +[MagicalRecord(ErrorHandling) defaultErrorHandler:](0xe5ac0) Recovery Suggestion: (null) 2012-12-31 03:42:07.089 iCloudTest[252:907] *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayI objectAtIndex:]: index 0 beyond bounds for empty array' *** First throw call stack: (0x3a7702a3 0x3465f97f 0x3a6bae8d 0xdd453 0x38a6311f 0x38a624b7 0x38a671bd 0x3a743f3b 0x3a6b6ebd 0x3a6b6d49 0x38a842eb 0x338f62f9 0xd101d 0x37f22b20) libc++abi.dylib: terminate called throwing an exception / private / var / mobile / Library / Mobile Documents / MA5BADG5AW ~ com ~ gazapps ~ iCloudTest / mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3 / com.gazapps.iCloudTest / v8GumdiUYmkE0aO9iGtPTPHX07qqWk7kRytsQwHKjwU = / mobile 2012-12-31 03:42:07.079 iCloudTest[252:1103] -[PFUbiquitySafeSaveFile waitForFileToUpload:](268): CoreData: Ubiquity: <PFUbiquityPeerReceipt: 0x1cd5a420>(0) permanentLocation: <PFUbiquityLocation: 0x1cd57b30>: /private/var/mobile/Library/Mobile Documents/MA5BADG5AW~com~gazapps~iCloudTest/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3/com.gazapps.iCloudTest/v8GumdiUYmkE0aO9iGtPTPHX07qqWk7kRytsQwHKjwU=/receipt.0.cdt safeLocation: <PFUbiquityLocation: 0x1cd57a80>: /private/var/mobile/Library/Mobile Documents/MA5BADG5AW~com~gazapps~iCloudTest/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3/com.gazapps.iCloudTest/v8GumdiUYmkE0aO9iGtPTPHX07qqWk7kRytsQwHKjwU=/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3.0.cdt currentLocation: <PFUbiquityLocation: 0x1cd57a80>: /private/var/mobile/Library/Mobile Documents/MA5BADG5AW~com~gazapps~iCloudTest/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3/com.gazapps.iCloudTest/v8GumdiUYmkE0aO9iGtPTPHX07qqWk7kRytsQwHKjwU=/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3.0.cdt kv: (null) Safe save failed for file, error: Error Domain=NSCocoaErrorDomain Code=512 "The file upload timed out." UserInfo=0x1cd5b7d0 {NSLocalizedDescription=The file upload timed out.} 2012-12-31 03:42:07.083 iCloudTest[252:1103] +[MagicalRecord(ErrorHandling) defaultErrorHandler:](0xe5ac0) Error: The file upload timed out. 2012-12-31 03:42:07.085 iCloudTest[252:1103] +[MagicalRecord(ErrorHandling) defaultErrorHandler:](0xe5ac0) Error Message: The file upload timed out. 2012-12-31 03:42:07.086 iCloudTest[252:1103] +[MagicalRecord(ErrorHandling) defaultErrorHandler:](0xe5ac0) Error Domain: NSCocoaErrorDomain 2012-12-31 03:42:07.087 iCloudTest[252:1103] +[MagicalRecord(ErrorHandling) defaultErrorHandler:](0xe5ac0) Recovery Suggestion: (null) 2012-12-31 03:42:07.089 iCloudTest[252:907] *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayI objectAtIndex:]: index 0 beyond bounds for empty array' *** First throw call stack: (0x3a7702a3 0x3465f97f 0x3a6bae8d 0xdd453 0x38a6311f 0x38a624b7 0x38a671bd 0x3a743f3b 0x3a6b6ebd 0x3a6b6d49 0x38a842eb 0x338f62f9 0xd101d 0x37f22b20) libc++abi.dylib: terminate called throwing an exception / private / var / mobile / Library / Mobile Documents / MA5BADG5AW ~ com ~ gazapps ~ iCloudTest / mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3 / com.gazapps.iCloudTest / v8GumdiUYmkE0aO9iGtPTPHX07qqWk7kRytsQwHKjwU = / mobile 2012-12-31 03:42:07.079 iCloudTest[252:1103] -[PFUbiquitySafeSaveFile waitForFileToUpload:](268): CoreData: Ubiquity: <PFUbiquityPeerReceipt: 0x1cd5a420>(0) permanentLocation: <PFUbiquityLocation: 0x1cd57b30>: /private/var/mobile/Library/Mobile Documents/MA5BADG5AW~com~gazapps~iCloudTest/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3/com.gazapps.iCloudTest/v8GumdiUYmkE0aO9iGtPTPHX07qqWk7kRytsQwHKjwU=/receipt.0.cdt safeLocation: <PFUbiquityLocation: 0x1cd57a80>: /private/var/mobile/Library/Mobile Documents/MA5BADG5AW~com~gazapps~iCloudTest/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3/com.gazapps.iCloudTest/v8GumdiUYmkE0aO9iGtPTPHX07qqWk7kRytsQwHKjwU=/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3.0.cdt currentLocation: <PFUbiquityLocation: 0x1cd57a80>: /private/var/mobile/Library/Mobile Documents/MA5BADG5AW~com~gazapps~iCloudTest/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3/com.gazapps.iCloudTest/v8GumdiUYmkE0aO9iGtPTPHX07qqWk7kRytsQwHKjwU=/mobile.4088E03C-763E-5A81-BB1B-64CABAFA73E3.0.cdt kv: (null) Safe save failed for file, error: Error Domain=NSCocoaErrorDomain Code=512 "The file upload timed out." UserInfo=0x1cd5b7d0 {NSLocalizedDescription=The file upload timed out.} 2012-12-31 03:42:07.083 iCloudTest[252:1103] +[MagicalRecord(ErrorHandling) defaultErrorHandler:](0xe5ac0) Error: The file upload timed out. 2012-12-31 03:42:07.085 iCloudTest[252:1103] +[MagicalRecord(ErrorHandling) defaultErrorHandler:](0xe5ac0) Error Message: The file upload timed out. 2012-12-31 03:42:07.086 iCloudTest[252:1103] +[MagicalRecord(ErrorHandling) defaultErrorHandler:](0xe5ac0) Error Domain: NSCocoaErrorDomain 2012-12-31 03:42:07.087 iCloudTest[252:1103] +[MagicalRecord(ErrorHandling) defaultErrorHandler:](0xe5ac0) Recovery Suggestion: (null) 2012-12-31 03:42:07.089 iCloudTest[252:907] *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayI objectAtIndex:]: index 0 beyond bounds for empty array' *** First throw call stack: (0x3a7702a3 0x3465f97f 0x3a6bae8d 0xdd453 0x38a6311f 0x38a624b7 0x38a671bd 0x3a743f3b 0x3a6b6ebd 0x3a6b6d49 0x38a842eb 0x338f62f9 0xd101d 0x37f22b20) libc++abi.dylib: terminate called throwing an exception 

I used this method to install Core Data Stack:

 [MagicalRecord setupCoreDataStackWithiCloudContainer:@"XXXXXXXX.com.gazapps.iCloudTest" localStoreNamed:@"PersonDB.sqlite"]; 

Has anyone had this problem?

 Enviroment: OSX 10.8.2, Xcode 4.5.2, app -> iOS 6, device -> iPhone 4S 

Answer 1

Yes, more times than I recall.

What this means is that the inside of Core Data was unable to connect to iCloud in some obscure and undocumented form. There is no way to restore or fix it - you will just try later. These errors do not come from Magical Record or your code; they are internal Core Data / iCloud failures.

Here's the thing: This does not mean that you did something wrong. And the consequence of this: you can not do anything to fix it . When using iCloud with master data, this happens sometimes, and you just need to deal with it. Write a mistake and pray about which god or gods you believe that they will correct it someday. Core Data with iCloud is just fundamentally flaky, and you come across one of the craziest parts.

Sometimes it helps just to repeat the call. But Magical Record returns void , so detecting a failure in the code is not as easy as you might expect.

During testing, this can help remove all of your app data from iCloud to begin cleaning. You do this in iOS in Settings → iCloud → Storage and Backup → Storage Management → (your application name is here) → Change → Delete All. Also be sure to check out http://developer.icloud.com/ to see what is in the cloud. In addition, if you have problems, be sure to remove the application from the device so that the old data does not sit.