Implementing mobFox causes crash

Just trying to implement mobFox into my app, but having trouble to make it run. I suspect that it is because of my general approach not to use IB at all, because the sample code works just fine.

After run it is pointing to the line

int retVal = UIApplicationMain(argc, argv, nil, @"UntitledAppDelegate");

which is in my main.m,

with this as result

2011-04-18 16:07:48.000 BinTeeth[10141:bf07] -[NSCFString md5]: unrecognized selector sent to instance 0x622ef40
2011-04-18 16:07:48.001 BinTeeth[10141:bf07] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSCFString md5]: unrecognized selector sent to instance 0x622ef40'
*** Call stack at first throw:
(
    0   CoreFoundation                      0x014845a9 __exceptionPreprocess + 185
    1   libobjc.A.dylib                     0x015d8313 objc_exception_throw + 44
    2   CoreFoundation                      0x014860bb -[NSObject(NSObject) doesNotRecognizeSelector:] + 187
    3   CoreFoundation                      0x013f5966 ___forwarding___ + 966
    4   CoreFoundation                      0x013f5522 _CF_forwarding_prep_0 + 50
    5   BinTeeth                            0x0002d90f -[MobFoxBannerView asyncRequestAdWithPublisherId:] + 177
    6   Foundation                          0x00670cf4 -[NSThread main] + 81
    7   Foundation                          0x00670c80 __NSThread__main__ + 1387
    8   libSystem.B.dylib                   0x9758c85d _pthread_start + 345
    9   libSystem.B.dylib                   0x9758c6e2 thread_start + 34
)
terminate called after throwing an instance of 'NSException'

any help would be appreciated, I have tried many things, but nothing really looks loke solution 开发者_如何学Cfor me so far

tnx

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Did you set the linker-flags as described in the SDK documentation?

Best