I am sending a Post with object loader and getting this error in output window. FYI, My didFailWithError: delegate never got hit. Not sure why.

`objectLoader:didFailWithError:]:` unrecognized selector `sent to class 0x123608`

How did i find out what is 0x123608?

I set the router in AppDelegate class and Mapping in AppDelegate too.

here is a method in my class which inherit RKObjectLoaderDelegate. I am using shared singleton.

[[RKObjectManager sharedManager] postObject:review usingBlock:^(RKObjectLoader *loader){       
//     loader.params=params,
       loader.objectMapping = [[RKObjectManager sharedManager].mappingProvider objectMappingForClass:[myclass class]];
       loader.serializationMIMEType = RKMIMETypeJSON; // We want to send this request as JSON
       loader.method = RKRequestMethodPOST;
       loader.serializationMapping = [RKObjectMapping serializationMappingUsingBlock:^(RKObjectMapping* mapping) {
           [mapping mapAttributes:@"field1", @"field2",@"field3",nil];            
       }];
       loader.targetObject = nil;
       loader.delegate = self;
   }];       
}