Crash report from my game. Help needed!

Manto

I published my football manager game to appstore. After few days I got a crash report from my game.

It says:

Thread 0 Crashed:
0 footballmanager 0x00033fd8 GS_GetIntendedDisplaySize + 12
1 footballmanager 0x000307ac -[EAGLGameView configureContentScaleFactor] + 76
2 footballmanager 0x0000383c -[GameSaladPlayerAppDelegate showViewAndStart] + 420
3 footballmanager 0x00003464 -[GameSaladPlayerAppDelegate loadingFinished:] + 232
4 Foundation 0x3295ffb0 _nsnote_callback
5 CoreFoundation 0x31753e6c __CFXNotificationPost_old
6 CoreFoundation 0x31704374 _CFXNotificationPostNotification
7 Foundation 0x3294b0bc -[NSNotificationCenter postNotificationName:object:userInfo:]
8 Foundation 0x32953452 -[NSNotificationCenter postNotificationName:object:]
9 footballmanager 0x00030580 -[EAGLGameView loadGameFromDirectory:] + 204
10 footballmanager 0x00044dd0 -[GSEAGLGameView loadGameFromDirectory:] + 284
11 Foundation 0x329cdc86 __NSFireDelayedPerform
12 CoreFoundation 0x3175ba54 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__
13 CoreFoundation 0x3175dede __CFRunLoopDoTimer
14 CoreFoundation 0x3175e85e __CFRunLoopRun
15 CoreFoundation 0x317078e4 CFRunLoopRunSpecific
16 CoreFoundation 0x317077ec CFRunLoopRunInMode
17 GraphicsServices 0x33ac26e8 GSEventRunModal
18 GraphicsServices 0x33ac2794 GSEventRun
19 UIKit 0x3011e2a0 -[UIApplication _run]
20 UIKit 0x3011ce10 UIApplicationMain
21 footballmanager 0x00003140 main + 64
22 footballmanager 0x000030c0 start + 44

The game is working in my and my friend's iPhone and i can't find the problem.Can anyone help me to find the problem?