title: [NSCFString objectForKey:]: unrecognized selector sent to instance
body: <p>In this code: </p>
  
  <pre><code>- (void)connectionDidFinishLoading:(NSURLConnection *)connection {      
  
  //---initialize the array--- 
  listOfJMovies = [[NSMutableArray alloc] init];
  listOfJMoviePosters = [[NSMutableArray alloc] init];
  tmdbMovies = [[NSArray alloc] init];
  posters = [[NSArray alloc] init];
  thumbs = [[NSArray alloc] init];
  
  //---set the title--- 
  self.navigationItem.title = @"Movies";
  
  NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
  
  //NSLog(responseString);
  
  SBJsonParser *json = [[SBJsonParser new] autorelease];
  tmdbMovies = [json objectWithString:responseString error:nil];
  
  for (id movie in tmdbMovies) {
      [listOfJMovies addObject:[movie objectForKey:@"name"]];
      NSLog(@"Name: %@", [movie objectForKey:@"name"]);
      //[listOfJMoviePosters addObject:[obj objectForKey:@"posters"]];
      //NSLog(@"%@", [obj objectForKey:@"posters"]);
  
      posters = [movie objectForKey:@"posters"];
  
      for (id image in posters) {
          NSLog(@"image: %@", [image objectForKey:@"image"]);
          thumbs = [image objectForKey:@"image"];
  
          for (id url in thumbs) {
  
  
              NSLog(@"Size: %@", [url objectForKey:@"size"]);
  
              //NSLog(@"blah");
              //[listOfJMoviePosters addObject:[url objectForKey:@"size"]];
  
          }
  
  
  
      }
  
  }
  
  
  [[self tableView] reloadData];
  
  [responseString release];
  [connection release];
  [responseData release];
  
  
  }
  </code></pre>
  
  <p>This line: NSLog(@"Size: %@", [url objectForKey:@"size"]);</p>
  
  <p>Is causing the app to crash and throw the following error:</p>
  
  <p>2010-12-30 00:33:29.730 FlixIt[33132:207] -[NSCFString objectForKey:]: unrecognized selector sent to instance 0x4e50f00
  2010-12-30 00:33:29.732 FlixIt[33132:207] <em>*</em> Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSCFString objectForKey:]: unrecognized selector sent to instance 0x4e50f00'</p>
  
  <p>Here is the JSON: <a href="http://api.themoviedb.org/2.1/Movie.browse/en-US/json/e5084159b962a8f0c39096f379a1363c?order_by=rating&amp;order=desc&amp;genres=18&amp;min_votes=5&amp;page=1&amp;per_page=10" rel="nofollow">http://api.themoviedb.org/2.1/Movie.browse/en-US/json/e5084159b962a8f0c39096f379a1363c?order_by=rating&amp;order=desc&amp;genres=18&amp;min_votes=5&amp;page=1&amp;per_page=10</a></p>