QNetworkAccessManager problem. It send's nothing

[stepchik]

Hello!!! I have a trouble with QNetworkAccessManager.
I created new Qt project and use Sample code. It works perfect. But when i try to past my code into existing project. "manager->get(request)" send nothing and finished slot's dosn't fire. I use QT4.6 and Visual Studio 2008. May be i forget to include some directive or debugger option? Another not network slot's work's perfect. All network slots(slotError,slotReadyRead) dosn't fire. Checkpoint.php add's visit record to text file. May be QNetworkAccessManager conflict with existing project?

I will be very happy if someone could help.

const QString url= "http://127.0.0.6/checkpoint.php";
   QNetworkRequest request;
   request.setUrl(QUrl(url));
   request.setRawHeader("User-Agent", "MyOwnBrowser 1.0");
   qDebug("running");
 
   manager = new QNetworkAccessManager(this);
   QNetworkReply *reply = manager->get(request);
 
   QObject::connect(reply, SIGNAL(readyRead()), this, SLOT(slotReadyRead()));	
   QObject::connect(manager, SIGNAL(finished(QNetworkReply*)),this, SLOT(replyHasFinished()));
   QObject::connect(reply, SIGNAL(error(QNetworkReply::NetworkError)),this, SLOT(slotError(QNetworkReply::NetworkError)));
 
   QObject::connect(reply, SIGNAL(sslErrors(QList<QSslError>)),this, SLOT(slotSslErrors(QList<QSslError>)));
 
....
void MyClass::replyHasFinished(){
	AfxMessageBox(_T("replyHasFinished WORKS"));
}

const QString url= "http://127.0.0.6/checkpoint.php";
   QNetworkRequest request;
   request.setUrl(QUrl(url));
   request.setRawHeader("User-Agent", "MyOwnBrowser 1.0");
   qDebug("running");

   manager = new QNetworkAccessManager(this);
   QNetworkReply *reply = manager->get(request);
   
   QObject::connect(reply, SIGNAL(readyRead()), this, SLOT(slotReadyRead()));	
   QObject::connect(manager, SIGNAL(finished(QNetworkReply*)),this, SLOT(replyHasFinished()));
   QObject::connect(reply, SIGNAL(error(QNetworkReply::NetworkError)),this, SLOT(slotError(QNetworkReply::NetworkError)));
   
   QObject::connect(reply, SIGNAL(sslErrors(QList<QSslError>)),this, SLOT(slotSslErrors(QList<QSslError>)));

....
void MyClass::replyHasFinished(){
	AfxMessageBox(_T("replyHasFinished WORKS"));
}

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