Black screen on iOS 7.0.4 for some users. Please Help.

Hi, 

I’ve got a serious problem with my new application on the AppStore Music4Kids.

I did a lot of tests, on all iPad models and all iPhone models.

Everything worked fine for me.

I used Corona Version 2013.1242 (2013.10.24)

A lot of users downloaded my app on the appStore. In general, when users launch the app, there is no problem.

But few users have a problem : when they launch Music4Kids, they got the loading screen and just after, a BLACK screen.

A user post example today :

"When I open the application it does not work. It shows only a black screen. Can you help me solving the problem? "

In general users who have problems have the 7.0.4 iOS version.

I did more tests this morning on iPhone 5s, iPad air, and iPhone 4s.

No problem at all. Everything works fine.

I read this tutorial http://www.coronalabs.com/blog/2013/07/09/tutorial-basic-debugging/

So I used  Xcode Organizer

1 - Below the log on my console after launching Music4Kids dev prototype on my iPhone 5s with iOS 7.0.4.

The app is launching normaly, with no problem.

Dec 11 13:46:26 iPhone-de-Olivier-Romanetti kernel[0] \<Debug\>: launchd[1095] Container: /private/var/mobile/Applications/A7EF876C-055A-4A2C-8D64-21354B9E571F (sandbox) Dec 11 13:46:26 iPhone-de-Olivier-Romanetti M4K\_iPhone5s[1095] \<Warning\>: iPhone5

As you can see, there’s a warning

2 - Below the log on my console after launching Music4Kids prod version , bought on the AppStore on my iPhone 5s with iOS 7.0.4.

The app is launching normaly, with no problem.

Dec 11 14:09:11 iPhone-de-Olivier-Romanetti kernel[0] \<Debug\>: launchd[1120] Container: /private/var/mobile/Applications/24B6D8F0-D5B3-47D3-B53B-C433ACE6E38C (sandbox) Dec 11 14:09:11 iPhone-de-Olivier-Romanetti assistantd[1121] \<Notice\>: connection 2 total: 1, connected: 0, added new subflow [cid=1, state=Waiting, ifindex=9] Dec 11 14:09:11 iPhone-de-Olivier-Romanetti assistantd[1121] \<Notice\>: connection 2 total: 1, connected: 1, new connected subflow [cid=1, state=Connected, ifindex=9, preferred, mp\_capable] Dec 11 14:09:11 iPhone-de-Olivier-Romanetti assistantd[1121] \<Notice\>: connection 2 total: 2, connected: 1, added new subflow [cid=2, state=Waiting, ifindex=2] Dec 11 14:09:11 iPhone-de-Olivier-Romanetti awdd[1122] \<Error\>: CoreLocation: CLClient is deprecated. Will be obsolete soon. Dec 11 14:09:12 iPhone-de-Olivier-Romanetti assistant\_service[1123] \<Warning\>: [MPAssistantStationSyncHandler] Begin sync with anchor: , validity: 0, model validity: 0 Dec 11 14:09:12 iPhone-de-Olivier-Romanetti assistant\_service[1123] \<Warning\>: [MPAssistantStationSyncHandler] Found 0 revisions to sync. Dec 11 14:09:12 iPhone-de-Olivier-Romanetti assistant\_service[1123] \<Warning\>: [MPAssistantStationSyncHandler] Sync ended. Dec 11 14:09:12 iPhone-de-Olivier-Romanetti assistant\_service[1123] \<Warning\>: {MediaLibrary} Database validation succeeded Dec 11 14:09:15 iPhone-de-Olivier-Romanetti assistantd[1121] \<Notice\>: connection 2 total: 2, connected: 2, new connected subflow [cid=2, state=Connected, ifindex=2, mp\_capable]

As you can see, there are   Warnings too.

Any help would be VERY appreciated to solve this problem.

Thank you very much

Best regards,

Olivier

Hi,

I’ve just managed to reproduce the problem!!!  :smiley:

I explain :

  • I remove Music4Kids from my device iPhone 5s iOS 7.0.4

  • I choose SUOMI language in settings for my iPhone (I precise that I’m french and I my settings are in French) because one of my user with a black screen told me he used this language.

  • I downloaded again from the appStore Music4Kids

  • I launched Music4Kids…

> BLACK SCREEN

below the log when I did all above :

Dec 11 14:33:22 iPhone-de-Olivier-Romanetti searchd[1189] \<Warning\>: Finished getting 78 applications, took 0.048925 seconds Dec 11 14:33:22 iPhone-de-Olivier-Romanetti searchd[1189] \<Warning\>: Indexed all records in 0.27s Dec 11 14:33:24 iPhone-de-Olivier-Romanetti kernel[0] \<Debug\>: launchd[1190] Container: /private/var/mobile/Applications/B389860F-0006-4BF8-8556-3FDA55150FB7 (sandbox) Dec 11 14:33:27 iPhone-de-Olivier-Romanetti Music4Kids\_v1.0[1190] \<Warning\>: Runtime error ?:0: attempt to index field 'lettresSheetInfo' (a nil value) stack traceback: [C]: ? ?: in function \<?:41\> ?: in function 'dispatchEvent' ?: in function '?' ?: in function \<?:80\> ?: in function \<?:218\> Dec 11 14:33:27 iPhone-de-Olivier-Romanetti Music4Kids\_v1.0[1190] \<Warning\>: Runtime error stack traceback: [C]: ? ?: in function \<?:41\> ?: in function 'dispatchEvent' ?: in function '?' ?: in function \<?:80\> ?: in function \<?:218\> Dec 11 14:33:28 iPhone-de-Olivier-Romanetti assistantd[1192] \<Notice\>: connection 2 total: 1, connected: 0, added new subflow [cid=1, state=Waiting, ifindex=9] Dec 11 14:33:28 iPhone-de-Olivier-Romanetti awdd[1193] \<Error\>: CoreLocation: CLClient is deprecated. Will be obsolete soon. Dec 11 14:33:28 iPhone-de-Olivier-Romanetti assistantd[1192] \<Notice\>: connection 2 total: 1, connected: 1, new connected subflow [cid=1, state=Connected, ifindex=9, preferred, mp\_capable] Dec 11 14:33:28 iPhone-de-Olivier-Romanetti assistantd[1192] \<Notice\>: connection 2 total: 2, connected: 1, added new subflow [cid=2, state=Waiting, ifindex=2] Dec 11 14:33:28 iPhone-de-Olivier-Romanetti assistant\_service[1194] \<Warning\>: [MPAssistantStationSyncHandler] Begin sync with anchor: , validity: 0, model validity: 0 Dec 11 14:33:28 iPhone-de-Olivier-Romanetti assistant\_service[1194] \<Warning\>: [MPAssistantStationSyncHandler] Found 0 revisions to sync. Dec 11 14:33:28 iPhone-de-Olivier-Romanetti assistant\_service[1194] \<Warning\>: [MPAssistantStationSyncHandler] Sync ended. Dec 11 14:33:28 iPhone-de-Olivier-Romanetti assistant\_service[1194] \<Warning\>: {MediaLibrary} Database validation succeeded Dec 11 14:33:39 iPhone-de-Olivier-Romanetti cplogd[1156] \<Warning\>: Exiting. Dec 11 14:34:08 iPhone-de-Olivier-Romanetti medialibraryd[1166] \<Warning\>: {MediaLibrary} [MediaLibraryService] Cancelling any active or suspended import operations in progress for process assistant\_servic (process ID = 1194) Dec 11 14:34:08 iPhone-de-Olivier-Romanetti kernel[0] \<Debug\>: 029386.887785 wlan.A[7114] AppleBCMWLANNetManager::checkRealTimeTraffic(): now 29386.887770750 num entries 4 Dec 11 14:34:08 iPhone-de-Olivier-Romanetti kernel[0] \<Debug\>: 029386.887813 wlan.A[7115] AppleBCMWLANCore::dumpWmeCounters(): per TIDs tx counters: 71020 53225 0 0 0 606 2002 0, per TIDs rx counters: 156496 0 0 0 0 0 141 0 Dec 11 14:34:08 iPhone-de-Olivier-Romanetti kernel[0] \<Debug\>: 029386.887832 wlan.A[7116] AppleBCMWLANCore::dumpWmeCounters(): AWDL: Tx 0 0 0 0 0 0 0 0, Rx: 0 0 0 0 0 0 0 0 Dec 11 14:34:08 iPhone-de-Olivier-Romanetti medialibraryd[1166] \<Warning\>: {MediaLibrary} [MLWriter] Cleaning up any remaining transactions for ended process \<unknown process\> (process ID = 1194)

Any help would be VERY appreciated

Thank you

Best

Olivier

Hi,

I’ve just managed to reproduce the problem!!!  :smiley:

I explain :

  • I remove Music4Kids from my device iPhone 5s iOS 7.0.4

  • I choose SUOMI language in settings for my iPhone (I precise that I’m french and I my settings are in French) because one of my user with a black screen told me he used this language.

  • I downloaded again from the appStore Music4Kids

  • I launched Music4Kids…

> BLACK SCREEN

below the log when I did all above :

Dec 11 14:33:22 iPhone-de-Olivier-Romanetti searchd[1189] \<Warning\>: Finished getting 78 applications, took 0.048925 seconds Dec 11 14:33:22 iPhone-de-Olivier-Romanetti searchd[1189] \<Warning\>: Indexed all records in 0.27s Dec 11 14:33:24 iPhone-de-Olivier-Romanetti kernel[0] \<Debug\>: launchd[1190] Container: /private/var/mobile/Applications/B389860F-0006-4BF8-8556-3FDA55150FB7 (sandbox) Dec 11 14:33:27 iPhone-de-Olivier-Romanetti Music4Kids\_v1.0[1190] \<Warning\>: Runtime error ?:0: attempt to index field 'lettresSheetInfo' (a nil value) stack traceback: [C]: ? ?: in function \<?:41\> ?: in function 'dispatchEvent' ?: in function '?' ?: in function \<?:80\> ?: in function \<?:218\> Dec 11 14:33:27 iPhone-de-Olivier-Romanetti Music4Kids\_v1.0[1190] \<Warning\>: Runtime error stack traceback: [C]: ? ?: in function \<?:41\> ?: in function 'dispatchEvent' ?: in function '?' ?: in function \<?:80\> ?: in function \<?:218\> Dec 11 14:33:28 iPhone-de-Olivier-Romanetti assistantd[1192] \<Notice\>: connection 2 total: 1, connected: 0, added new subflow [cid=1, state=Waiting, ifindex=9] Dec 11 14:33:28 iPhone-de-Olivier-Romanetti awdd[1193] \<Error\>: CoreLocation: CLClient is deprecated. Will be obsolete soon. Dec 11 14:33:28 iPhone-de-Olivier-Romanetti assistantd[1192] \<Notice\>: connection 2 total: 1, connected: 1, new connected subflow [cid=1, state=Connected, ifindex=9, preferred, mp\_capable] Dec 11 14:33:28 iPhone-de-Olivier-Romanetti assistantd[1192] \<Notice\>: connection 2 total: 2, connected: 1, added new subflow [cid=2, state=Waiting, ifindex=2] Dec 11 14:33:28 iPhone-de-Olivier-Romanetti assistant\_service[1194] \<Warning\>: [MPAssistantStationSyncHandler] Begin sync with anchor: , validity: 0, model validity: 0 Dec 11 14:33:28 iPhone-de-Olivier-Romanetti assistant\_service[1194] \<Warning\>: [MPAssistantStationSyncHandler] Found 0 revisions to sync. Dec 11 14:33:28 iPhone-de-Olivier-Romanetti assistant\_service[1194] \<Warning\>: [MPAssistantStationSyncHandler] Sync ended. Dec 11 14:33:28 iPhone-de-Olivier-Romanetti assistant\_service[1194] \<Warning\>: {MediaLibrary} Database validation succeeded Dec 11 14:33:39 iPhone-de-Olivier-Romanetti cplogd[1156] \<Warning\>: Exiting. Dec 11 14:34:08 iPhone-de-Olivier-Romanetti medialibraryd[1166] \<Warning\>: {MediaLibrary} [MediaLibraryService] Cancelling any active or suspended import operations in progress for process assistant\_servic (process ID = 1194) Dec 11 14:34:08 iPhone-de-Olivier-Romanetti kernel[0] \<Debug\>: 029386.887785 wlan.A[7114] AppleBCMWLANNetManager::checkRealTimeTraffic(): now 29386.887770750 num entries 4 Dec 11 14:34:08 iPhone-de-Olivier-Romanetti kernel[0] \<Debug\>: 029386.887813 wlan.A[7115] AppleBCMWLANCore::dumpWmeCounters(): per TIDs tx counters: 71020 53225 0 0 0 606 2002 0, per TIDs rx counters: 156496 0 0 0 0 0 141 0 Dec 11 14:34:08 iPhone-de-Olivier-Romanetti kernel[0] \<Debug\>: 029386.887832 wlan.A[7116] AppleBCMWLANCore::dumpWmeCounters(): AWDL: Tx 0 0 0 0 0 0 0 0, Rx: 0 0 0 0 0 0 0 0 Dec 11 14:34:08 iPhone-de-Olivier-Romanetti medialibraryd[1166] \<Warning\>: {MediaLibrary} [MLWriter] Cleaning up any remaining transactions for ended process \<unknown process\> (process ID = 1194)

Any help would be VERY appreciated

Thank you

Best

Olivier