Механизм Twitter SA_OAuthИнтеграция с TwitterEngine?

Я успешно добавил SA_OAuthTwitterEngineв свое приложение, но у меня возникла очень странная проблема. Когда я вхожу в Твиттер, мое приложение падает:

- (void) OAuthTwitterController: (SA_OAuthTwitterController *) controller authenticatedWithUsername: (NSString *) username 
{
    [_engine sendUpdate:[NSString stringWithFormat:@"This Tweet for testing!"]];
    NSLog(@"Authenicated for %@", username);
}

Приложение падает на [_engine sendUpdate:[NSString stringWithFormat:@"Этот твит для тестирования!"]];. Если вместо этого я использую [_engine sendUpdate:nil];, то он будет работать без сбоев, но твит не может быть отправлен из моей учетной записи.

Когда я пытаюсь отследить метод sendUpdate, у меня возникает реальная проблема с оператором [theRequest prepare];в следующей функции:

- (NSString *)_sendRequestWithMethod:(NSString *)method path:(NSString *)path queryParameters:(NSDictionary *)params body:(NSString *)body requestType:(MGTwitterRequestType)requestType responseType:(MGTwitterResponseType)responseType
{
    NSString *fullPath = path;
    NSString *urlString = [NSString stringWithFormat:@"%@://%@/%@", (_secureConnection) ? @"https" : @"http", _APIDomain, fullPath];
    NSURL *finalURL = [NSURL URLWithString:urlString];
    if (!finalURL) {
        return nil;
    }
OAMutableURLRequest *theRequest = [[OAMutableURLRequest alloc] initWithURL:finalURL consumer:self.consumer  token:_accessToken realm: nil signatureProvider:nil];
    if (method) {
        [theRequest setHTTPMethod:method];
    }
    [theRequest setHTTPShouldHandleCookies:NO];

    // Set headers for client information, for tracking purposes at Twitter.
    [theRequest setValue:_clientName    forHTTPHeaderField:@"X-Twitter-Client"];
    [theRequest setValue:_clientVersion forHTTPHeaderField:@"X-Twitter-Client-Version"];
    [theRequest setValue:_clientURL     forHTTPHeaderField:@"X-Twitter-Client-URL"];

    // Set the request body if this is a POST request.
    BOOL isPOST = (method && [method isEqualToString:@"POST"]);
    if (isPOST) {
        // Set request body, if specified (hopefully so), with 'source' parameter if appropriate.
        NSString *finalBody = @"";
        if (body) {
            finalBody = [finalBody stringByAppendingString:body];
        }
        if (_clientSourceToken) {
            finalBody = [finalBody stringByAppendingString:[NSString stringWithFormat:@"%@source=%@", (body) ? @"&" : @"?" , _clientSourceToken]];
        }

        if (finalBody) {
            [theRequest setHTTPBody:[finalBody dataUsingEncoding:NSUTF8StringEncoding]];
        }
    }
    [theRequest prepare];

    // Create a connection using this request, with the default timeout and caching policy, 
    // and appropriate Twitter request and response types for parsing and error reporting.
    MGTwitterHTTPURLConnection *connection;
    connection = [[MGTwitterHTTPURLConnection alloc] initWithRequest:theRequest delegate:self requestType:requestType responseType:responseType];

    if (!connection) {
        return nil;
    } else {
        [_connections setObject:connection forKey:[connection identifier]];
    }

    return [connection identifier];
}

Отчет о сбое:

0  0x01f023ef in CFRelease ()
1  0x0008d04c in -[OAMutableURLRequest URLEncodedString:] (self=0x7bc673b0,       _cmd=0x9ee5f, string=0x0) at /Users/ben/Dropbox/Dev/External Projects/Twitter-OAuth-iPhone/OAuthConsumeriPhoneLib/OAuthConsumerSrc/OAMutableURLRequest.m:287
2  0x0008bbe3 in -[OAMutableURLRequest prepare] (self=0x7bc673b0, _cmd=0x978cc) at /Users/ben/Dropbox/Dev/External Projects/Twitter-OAuth-iPhone/OAuthConsumeriPhoneLib/OAuthConsumerSrc/OAMutableURLRequest.m:131
3  0x00088460 in -[SA_OAuthTwitterEngine _sendRequestWithMethod:path:queryParameters:body:requestType:responseType:] (_cmd=0x96833, method=0xc0250, body=0x7b971210, requestType=<value temporarily unavailable, due to optimizations>) at SA_OAuthTwitterEngine.m:315

4  0x0007f673 in -[MGTwitterEngine sendUpdate:inReplyTo:] (self=<value temporarily unavailable, due to optimizations>, _cmd=0x96914, updateID=2073243024) at MGTwitterEngine.m:1019

5  0x0007f496 in -[MGTwitterEngine sendUpdate:] (self=0x7b932d90, _cmd=0x95e02, status=0xc0510) at MGTwitterEngine.m:995

6  0x0007bf3f in -[DMUAppDelegate OAuthTwitterController:authenticatedWithUsername:] (self=0x7b918a20, _cmd=0x96152) at DMUAppDelegate.m:572

7  0x0008503b in -[SA_OAuthTwitterController gotPin:] (_cmd=0x975b4, pin=0x7ae573e0) at SA_OAuthTwitterController.m:125

8  0x00086137 in -[SA_OAuthTwitterController webViewDidFinishLoad:] (self=0x7b944a00, _cmd=0xf070e2, webView=0x7ae46750) at SA_OAuthTwitterController.m:224

9  0x00be036a in -[UIWebView webView:didFinishLoadForFrame:] ()

10 0x00be1956 in -[UIWebViewWebViewDelegate webView:didFinishLoadForFrame:] ()

11 0x01f5c51d in __invoking___ ()

12 0x01f5c437 in -[NSInvocation invoke] ()

13 0x01f8749a in -[NSInvocation invokeWithTarget:] ()

14 0x03462aff in -[_WebSafeForwarder forwardInvocation:] ()
15 0x01f5d0c9 in ___forwarding___ ()
16 0x01f5cce2 in __forwarding_prep_0___ ()

17 0x01f5c51d in __invoking___ ()
18 0x01f5c437 in -[NSInvocation invoke] ()

19 0x04005ae3 in SendMessage ()
20 0x04006115 in HandleDelegateSource ()

21 0x01fca97f in __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ ()
22 0x01f2db73 in __CFRunLoopDoSources0 ()
23 0x01f2d454 in __CFRunLoopRun ()
24 0x01f2cdb4 in CFRunLoopRunSpecific ()
25 0x01f2cccb in CFRunLoopRunInMode ()
26 0x01e60879 in GSEventRunModal ()
27 0x01e6093e in GSEventRun ()

28 0x00a29a9b in UIApplicationMain ()
29 0x00040296 in main (argc=1, argv=0xc003c604) at /Users/dhirenshah/Desktop/Projects/Projects/DMU/DMU/main.m:16
(gdb)