title: RestKit 0.20.0 getobject
body: <p>I am new to restkit.I have integrated restkit 0.20.0-pre6 successfully by following instructions from github. Then I have build my project in console, I got the following </p>
  
  <p>restkit:RKLog.m:34 RestKit logging initialized...</p>
  
  <p>after that I would like to get data at a path </p>
  
  <p>Initially there is an activation screen .so I would like to send activation code to it and if it is correct, I would like to get corresponding details .</p>
  
  <pre><code>NSURL *urll=[NSURL URLWithString:@"http://url/FirstRest/rest/application/Activate"];
  AFHTTPClient* client = [[AFHTTPClient alloc] initWithBaseURL:urll];
  RKObjectManager *manager = [[RKObjectManager alloc] initWithHTTPClient:client];
  [RKObjectManager setSharedManager:manager];
  
  
  
  Article *article = [Article new];
  article.activationCode = @"S1234";
  [manager.router.routeSet addRoute:[RKRoute routeWithClass:[Article class] pathPattern:@"/FirstRest/rest/application/Activate/:activationCode" method:RKRequestMethodGET]];
  
  [[RKObjectManager sharedManager] getObject:article path:nil parameters:nil success:^(RKObjectRequestOperation *operation, RKMappingResult *result)
  {
      // Request
      NSLog(@"result is ************* %@",result);
  } failure:^(RKObjectRequestOperation *operation, NSError *error) {
                         UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error" message:[error localizedDescription] delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
                        [alert show];
  }];
  </code></pre>
  
  <p>`</p>
  
  <p>in my console I'm getting </p>
  
  <pre><code>   I restkit.network:RKHTTPRequestOperation.m:179 GET 'http://url/FirstRest/rest/application/Activate/S1234' (200 OK) [1.4744 s]
  </code></pre>
  
  <p>2013-01-28 14:07:59.284 Polls[985:15103] E restkit.network:RKResponseMapperOperation.m:240 Failed to parse response data: Loaded an unprocessable response (200) with content type 'application/json'</p>
  
  <p>I couldn't find out what does it really means and how to overcome this</p>