title: App crashes on ios 4.X for framework Twitter.framework
body: <p>I am using twitter using Sharekit and for IOS5, I am using its class <code>TWTweetComposeViewControllerClass</code>   as,</p>
  
  <pre><code>Class TWTweetComposeViewControllerClass = NSClassFromString(@"TWTweetComposeViewController");
  
      if (TWTweetComposeViewControllerClass != nil) {
          if([TWTweetComposeViewControllerClass respondsToSelector:@selector(canSendTweet)]) {
              UIViewController *twitterViewController = [[TWTweetComposeViewControllerClass alloc] init];
  
              [twitterViewController performSelector:@selector(setInitialText:) 
                                          withObject:NSLocalizedString(@"TwitterMessage", @"")];
  
  
  
              [self.navigationController presentModalViewController:twitterViewController animated:YES];
              [twitterViewController release];
          }
      } else {
          [SHK flushOfflineQueue];
          SHKItem *item = [SHKItem text:text];
          //[SHKTwitter shareItem:item];
          SHKActionSheet *actionsheet = [SHKActionSheet actionSheetForItem:item];
          [actionsheet showFromToolbar:self.navigationController.toolbar];
      }
  </code></pre>
  
  <p>It is working fine with simulator 5.0 but crashes on 4.3 with below error.</p>
  
  <pre><code>dyld: Library not loaded: /System/Library/Frameworks/Twitter.framework/Twitter
        Referenced from: /Users/indianic/Library/Application Support/iPhone Simulator/4.3.2/Applications/241167D0-62E0-4475-85FD-0B8253B4E456/demoFBTW.app/demoFBTW
        Reason: image not found
  </code></pre>
  
  <p>How do I fix this.
  I tried to change the dependency for the framework from <em>Required to Optional</em> but didn't find for that</p>