Crash at _JKDictionaryAddObject

[loretoparisi]

iOS7.1, iPhone4

Thread : Fatal Exception: NSInternalInconsistencyException 0 CoreFoundation 0x2fa12fd3 exceptionPreprocess + 130 1 libobjc.A.dylib 0x3a1bfccf objc_exception_throw + 38 2 CoreFoundation 0x2fa12ead +[NSException raise:format:] 3 Foundation 0x303bfdb7 -[NSAssertionHandler handleFailureInFunction:file:lineNumber:description:] + 86 4 musiXmatch 0x00323b05 _JKDictionaryAddObject (JSONKit.m:999) 5 musiXmatch 0x0032ac9f jk_object_for_token (JSONKit.m:939) 6 musiXmatch 0x0032a83f jk_object_for_token (JSONKit.m:1927) 7 musiXmatch 0x0032a83f jk_object_for_token (JSONKit.m:1927) 8 musiXmatch 0x00324953 _JKParseUTF8String (JSONKit.m:1951) 9 musiXmatch 0x003250bf -JSONDecoder objectWithData:error: 10 musiXmatch 0x0033a11f -MXMLoader mXmRequestDidFinish:withCache: 11 musiXmatch 0x00334801 -MXMArtistInfoLoader mXmRequestDidFinish: 12 musiXmatch 0x0036aec9 -ASIHTTPRequest reportFinished 13 Foundation 0x303fbc73 __NSThreadPerformPerform + 386 14 CoreFoundation 0x2f9de25b __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 14 15 CoreFoundation 0x2f9dd72b __CFRunLoopDoSources0 + 206 16 CoreFoundation 0x2f9dbf1f __CFRunLoopRun + 622 17 CoreFoundation 0x2f946f4f CFRunLoopRunSpecific + 522 18 CoreFoundation 0x2f946d33 CFRunLoopRunInMode + 106 19 GraphicsServices 0x3484b663 GSEventRunModal + 138 20 UIKit 0x3229216d UIApplicationMain + 1136 21 musiXmatch 0x00100407 main (main.m:12) 22 libdyld.dylib 0x3a6ccab7 start + 2