title: MGTwitterEngine crash in iOS5
body: <p>While MGTwitterEngine works well on previous versions of iOS, it failed with EXC_BAD_ACCESS at moment when I try to post twit:</p>
  
  <pre><code>[twitter sendUpdate:textToShare];
  </code></pre>
  
  <p>The last list of Objective-C code executer is: </p>
  
  <pre><code>[theRequest prepare];
  </code></pre>
  
  <p>inside SA_OAuthTwitterEngine.m. This is call stack:</p>
  
  <pre><code>#1  0x00045a63 in -[OAMutableURLRequest URLEncodedString:] at /Users/ben/Dropbox/Dev/External Projects/Twitter-OAuth-iPhone/OAuthConsumeriPhoneLib/OAuthConsumerSrc/OAMutableURLRequest.m:287
  #2  0x000445fa in -[OAMutableURLRequest prepare] at /Users/ben/Dropbox/Dev/External Projects/Twitter-OAuth-iPhone/OAuthConsumeriPhoneLib/OAuthConsumerSrc/OAMutableURLRequest.m:131
  #3  0x00041778 in -[SA_OAuthTwitterEngine _sendRequestWithMethod:path:queryParameters:body:requestType:responseType:] at /Developer/WorkShop/XDictionary/trunk/Dictionary/Twitter+OAuth/SAOAuthTwitterEngine/SA_OAuthTwitterEngine.m:325
  #4  0x000356b1 in -[MGTwitterEngine sendUpdate:inReplyTo:] at /Developer/WorkShop/XDictionary/trunk/Dictionary/Twitter+OAuth/MGTwitterEngine/MGTwitterEngine.m:1037
  #5  0x0003546c in -[MGTwitterEngine sendUpdate:] ()
  #6  0x00023ae7 in -[SocialNetworking twitterShare] ()
  #7  0x00023c2b in -[SocialNetworking OAuthTwitterController:authenticatedWithUsername:] ()
  #8  0x0003d0d5 in -[SA_OAuthTwitterController gotPin:] ()
  #9  0x0003eabb in -[SA_OAuthTwitterController webViewDidFinishLoad:] ()
  #10 0x0051736a in -[UIWebView webView:didFinishLoadForFrame:] ()
  #11 0x00518956 in -[UIWebViewWebViewDelegate webView:didFinishLoadForFrame:] ()
  #12 0x01ced51d in __invoking___ ()
  #13 0x01ced437 in -[NSInvocation invoke] ()
  #14 0x01d1849a in -[NSInvocation invokeWithTarget:] ()
  #15 0x04f09aff in -[_WebSafeForwarder forwardInvocation:] ()
  #16 0x01cee0c9 in ___forwarding___ ()
  #17 0x01cedce2 in __forwarding_prep_0___ ()
  #18 0x01ced51d in __invoking___ ()
  #19 0x01ced437 in -[NSInvocation invoke] ()
  #20 0x05aa9ae3 in SendMessage(NSInvocation*) ()
  #21 0x05aaa115 in HandleDelegateSource(void*) ()
  #22 0x01d5b97f in __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ ()
  #23 0x01cbeb73 in __CFRunLoopDoSources0 ()
  #24 0x01cbe454 in __CFRunLoopRun ()
  #25 0x01cbddb4 in CFRunLoopRunSpecific ()
  #26 0x01cbdccb in CFRunLoopRunInMode ()
  #27 0x02ee1879 in GSEventRunModal ()
  #28 0x02ee193e in GSEventRun ()
  #29 0x00360a9b in UIApplicationMain ()
  #30 0x00001d3a in main ()
  </code></pre>
  
  <p>Any ideas? Workaround? 
  Do you know another Twitter framework which works well with iOS 5? The only thing I need to do with it - post twits (with possible login first, of course).</p>