title: Getting "unrecognized selector sent to instance"
body: <p>I am trying to parse a JSON object with the below code:</p>
  
  <pre><code> NSDictionary *res = [NSJSONSerialization JSONObjectWithData:_responseData options:NSJSONReadingMutableLeaves error:&amp;myError];
  
  NSArray *test = [res allValues];
  @NSLog(@"%@", test);
  </code></pre>
  
  <p>I keep getting this error though I know the values look like the below:</p>
  
  <pre><code>2014-07-25 22:31:17.652 Application[18009:60b] (
      {
      "at_tag" = sam;
      category = 1;
      distance = "95.60";
      "hash_tag" = idk;
      uid = 1;
      vidURI = "http://server/userPosts/avfgt123.mp4";
  },
      {
      "at_tag" = nick;
      category = 2;
      distance = "99.45";
      "hash_tag" = irdk;
      uid = 2;
      vidURI = "http://server/userPosts/avfg2223.mp4";
  }
  )
  </code></pre>
  
  <p>The whole error i get is this:</p>
  
  <pre><code>2014-07-25 22:33:13.829 App[18025:60b] -[__NSCFArray allValues]: unrecognized selector sent to instance 0x10d90c0d0
  2014-07-25 22:33:13.831 App[18025:60b] *** Terminating app due to uncaught exception   'NSInvalidArgumentException', reason: '-[__NSCFArray allValues]: unrecognized selector sent to   instance 0x10d90c0d0'
  *** First throw call stack:
  (
  0   CoreFoundation                      0x0000000102477495 __exceptionPreprocess + 165
  1   libobjc.A.dylib                     0x00000001021d699e objc_exception_throw + 43
  2   CoreFoundation                      0x000000010250865d -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
  3   CoreFoundation                      0x0000000102468d8d ___forwarding___ + 973
  4   CoreFoundation                      0x0000000102468938 _CF_forwarding_prep_0 + 120
  5   App                               0x00000001000028a7 -[BFTMainViewController connectionDidFinishLoading:] + 263
  6   Foundation                          0x0000000101ec736b __65-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]_block_invoke + 48
  7   Foundation                          0x0000000101d7abdb -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:] + 210
  8   Foundation                          0x0000000101d7aaec -[NSURLConnectionInternal _withActiveConnectionAndDelegate:] + 69
  9   CFNetwork                           0x0000000103289637 ___ZN27URLConnectionClient_Classic26_delegate_didFinishLoadingEU13block_pointerFvvE_block_invoke + 107
  10  CFNetwork                           0x0000000103287802 ___ZN27URLConnectionClient_Classic18_withDelegateAsyncEPKcU13block_pointerFvP16_CFURLConnectionPK33CFURLConnectionClientCurrent_VMaxE_block_invoke_2 + 84
  11  CoreFoundation                      0x000000010241df74 CFArrayApplyFunction + 68
  12  CFNetwork                           0x00000001031fa3e7 _ZN19RunloopBlockContext7performEv + 133
  13  CFNetwork                           0x00000001031fa217 _ZN17MultiplexerSource7performEv + 247
  14  CFNetwork                           0x00000001031fa03a _ZN17MultiplexerSource8_performEPv + 72
  15  CoreFoundation                      0x0000000102406d21 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
  16  CoreFoundation                      0x00000001024065f2 __CFRunLoopDoSources0 + 242
  17  CoreFoundation                      0x000000010242246f __CFRunLoopRun + 767
  18  CoreFoundation                      0x0000000102421d83 CFRunLoopRunSpecific + 467
  19  GraphicsServices                    0x0000000103cf2f04 GSEventRunModal + 161
  20  UIKit                               0x0000000100d83e33 UIApplicationMain + 1010
  21  App                               0x0000000100001693 main + 115
  22  libdyld.dylib                       0x00000001039745fd start + 1
  )
  libc++abi.dylib: terminating with uncaught exception of type NSException
  </code></pre>
  
  <p>I receive the error on line:</p>
  
  <pre><code>NSArray *test = [res allValues];
  </code></pre>
  
  <p>This has stumped me now for quite some time, I feel it is something simple I just have never ran into this issue before and can't put my finger on it.</p>