iPad app, will run in debug but adhoc crashes - ipad

Question

Here is the crash log
Date/Time: 2011-02-10 21:12:00.478 +0900
OS Version: iPhone OS 4.2.1 (8C148)
Report Version: 104
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x00000000, 0x00000000
Crashed Thread: 0
Thread 0 Crashed:
0 libSystem.B.dylib 0x30d7c2d4 __kill + 8
1 libSystem.B.dylib 0x30d7c2c4 kill + 4
2 libSystem.B.dylib 0x30d7c2b6 raise + 10
3 libSystem.B.dylib 0x30d90d72 abort + 50
4 libstdc++.6.dylib 0x34981a20 __gnu_cxx::__verbose_terminate_handler() + 376
5 libobjc.A.dylib 0x34a83594 _objc_terminate + 104
6 libstdc++.6.dylib 0x3497fdf2 __cxxabiv1::__terminate(void (*)()) + 46
7 libstdc++.6.dylib 0x3497fe46 std::terminate() + 10
8 libstdc++.6.dylib 0x3497ff16 __cxa_throw + 78
9 libobjc.A.dylib 0x34a824c4 objc_exception_throw + 64
10 CoreFoundation 0x3587c1a8 +[NSObject(NSObject) doesNotRecognizeSelector:] + 96
11 CoreFoundation 0x35823aa2 ___forwarding___ + 502
12 CoreFoundation 0x35823858 _CF_forwarding_prep_0 + 40
13 PictureDictionary 0x00005fe4 sgLoadFileImage(char const*, long*) (PictureDictionary.mm:41)
14 PictureDictionary 0x000061b0 CPictureDictionary::LoadPageData() (PictureDictionary.mm:814)
15 PictureDictionary 0x00006d02 CPictureDictionary::Update() (PictureDictionary.mm:505)
16 PictureDictionary 0x00003216 -[ES1Renderer render] (ES1Renderer.mm:63)
The line in my code where it starts to crash (with in stack trash #13 above) is
NSString* pStr = [[NSString alloc]
initWithUTF8String: pFileName];
For some reason it crashes here.
What is odd is that it runs fine in debug mode. But when I make a adhoc build and put it in the iPad through iTunes the above crash occurs.
I have cleaned and rebuilt many times, made sure my profiles and identifiers are correct.
I have no idea why this may be happening. Any insight or suggestions will help.
Thanks.

Answer 1

Sorry I'm no guru but maybe this will help a little.
This type of crash occurs when Cocoa cannot find the method you are invoking at runtime.
Normally you would receive a warning during compilation.
That said, it seems to be complaining that it cannot find an objective-C selector (method). However, sgLoadFileImage looks to me to be a C function.
For sure, something is different between your debug and release builds. Either the code is different, or the parameters supplied to the methods and functions.