My kind of humor. :P

#0  0x933f3e17 in objc_exception_throw ()
#1  0x93a82eeb in +[NSException raise:format:arguments:] ()
#2  0x93a82f2a in +[NSException raise:format:] ()
#3  0x96f15e30 in _NSArrayRaiseInsertNilException ()
#4  0x96e342d4 in kHappyFunTable ()
#5  0x96e341e4 in kHappyFunTable ()
#6  0x30acdc20 in -[UINavigationController 
           pushViewController:transition:forceImmediate:] ()
#7  0x30acd9b9 in -[UINavigationController pushViewController:animated:] ()
<snip>