My ios app crash in CalculateChunkPlaneSizes

Unity Engine
,
1

i develop one ios app with unity3d 4.1.3,and in my test ipad4,it crash after the loading screen,my ipad os is 6.1.2
here is the stack,can anyone tells something about the crash reason,thanks a lot.

Exception Type: EXC_BAD_ACCESS (SIGABRT)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000044
Crashed Thread: 0

Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libsystem_kernel.dylib 0x3c29c350 __pthread_kill + 8
1 libsystem_c.dylib 0x3c212fb2 pthread_kill + 54
2 libsystem_c.dylib 0x3c24f366 abort + 90
3 mytestApp 0x00746bf8 0x1000 + 7625720
4 mytestApp 0x00736550 0x1000 + 7558480
5 libsystem_c.dylib 0x3c21cd38 _sigtramp + 40
6 IMGSGX554GLDriver 0x32f36b8e CalculateChunkPlaneSizes(GLDTextureRec*, int, unsigned int*, unsigned int*, unsigned int*, unsigned int*) + 102
7 IMGSGX554GLDriver 0x32f36b8e CalculateChunkPlaneSizes(GLDTextureRec*, int, unsigned int*, unsigned int*, unsigned int*, unsigned int*) + 102
8 IMGSGX554GLDriver 0x32f392f2 sgxConfigureTexturePrivate(GLDTextureRec*) + 82
9 IMGSGX554GLDriver 0x32f37f44 glrUpdateTexture + 616
10 libGPUSupportMercury.dylib 0x377746be gldLoadFramebuffer + 102
11 GLEngine 0x35365bd2 gleUpdateDrawFramebufferState + 178
12 GLEngine 0x352dda5c glClear_Exec + 232
13 mytestApp 0x00348b78 0x1000 + 3439480
14 mytestApp 0x003e18cc 0x1000 + 4065484
15 mytestApp 0x003e22b8 0x1000 + 4068024
16 mytestApp 0x003e25ac 0x1000 + 4068780
17 mytestApp 0x003f0cb0 0x1000 + 4127920
18 mytestApp 0x004d334c 0x1000 + 5055308
19 mytestApp 0x004d3a54 0x1000 + 5057108
20 mytestApp 0x0030a7a8 0x1000 + 3184552
21 mytestApp 0x00004420 0x1000 + 13344
22 mytestApp 0x000043a0 0x1000 + 13216
23 QuartzCore 0x35b1d7a4 CA::smile:isplay::smile:isplayLink::dispatch(unsigned long long, unsigned long long) + 156
24 QuartzCore 0x35b1d6fc CA::smile:isplay::IOMFBDisplayLink::callback(__IOMobileFramebuffer*, unsigned long long, unsigned long long, unsigned long long, void*) + 60
25 IOMobileFramebuffer 0x37d74fd4 IOMobileFramebufferVsyncNotifyFunc + 152
26 IOKit 0x34b105aa IODispatchCalloutFromCFMessage + 190
27 CoreFoundation 0x33ef2888 __CFMachPortPerform + 116
28 CoreFoundation 0x33efd3e4 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION + 32
29 CoreFoundation 0x33efd386 __CFRunLoopDoSource1 + 134
30 CoreFoundation 0x33efc20a __CFRunLoopRun + 1378
31 CoreFoundation 0x33e6f238 CFRunLoopRunSpecific + 352
32 CoreFoundation 0x33e6f0c4 CFRunLoopRunInMode + 100
33 GraphicsServices 0x37a29336 GSEventRunModal + 70
34 UIKit 0x35d8b2b4 UIApplicationMain + 1116
35 mytestApp 0x00004ae0 0x1000 + 15072
36 mytestApp 0x00003af4 0x1000 + 10996

2

well, if you look through the stack you can see that it is crashing inside gles driver (read: not unity at all ;-))
so your best bet would be to report a bug with simple repro project (as simple as you can get)