image problem

gistfile1.m

NSURL *imageURL = [NSURL URLWithString:[podcast logoURL]];
    [[SVPodcatcherClient sharedInstance] imageAtURL:imageURL
                                       onCompletion:^(UIImage *fetchedImage, NSURL *url, BOOL isInCache) {
                                           if ([[url absoluteString] isEqualToString:[imageURL absoluteString]]) {
                                               if(!isInCache) {
                                                   CATransition *transition = [CATransition animation];
                                                   
                                                   
                                                   [self.logoImageView.layer addAnimation:transition forKey:nil];
                                               }
                                               
                                               self.logoImageView.image = fetchedImage;
                                               if (!fetchedImage) {
                                                   LOG_NETWORK(1, @"Error loading image for url: %@", url);
                                               }
                                           }
                                       }];