HELP! http connection doesn't works

hello!

I want to download a file from a server to my nokia n70.

On the emulator my app works fine but when I deploy it on the device, the app crashes.

My code is:

RSocketServ socketServer;
User::LeaveIfError(socketServer.Connect());

// Initialise the RConnection.
RConnection connection;
User::LeaveIfError(connection.Open(socketServer));

// open the IAP communications database
CCommsDatabase* commDB = CCommsDatabase::NewL(EDatabaseTypeIAP);
CleanupStack::PushL(commDB);

// initialize a view
CCommsDbConnectionPrefTableView* commDBView = commDB->OpenConnectionPrefTableInRankOrderLC(ECommDbConnectionDirectionOutgoing);

// go to the first record
User::LeaveIfError(commDBView->GotoFirstRecord());

// Declare a prefTableView Object.
CCommsDbConnectionPrefTableView::TCommDbIapConnectionPref pref;

// read the connection preferences
commDBView->ReadConnectionPreferenceL(pref);
TUint32 iapID = pref.iBearer.iIapId;

// pop and destroy the IAP View
CleanupStack::PopAndDestroy(commDBView);

// pop and destroy the database object
CleanupStack::PopAndDestroy(commDB);

// Now we have the iap Id. Use it to connect for the connection.
// Create a connection preference variable.
TCommDbConnPref connectPref;

// start a synchronous connection
TInt errConnect = connection.Start(connectPref);
m_Session.OpenL();
RStringPool strP = m_Session.StringPool();
RHTTPConnectionInfo connInfo = m_Session.ConnectionInfo();
connInfo.SetPropertyL ( strP.StringF(HTTP::EHttpSocketServ,RHTTPSession::GetTable() ), THTTPHdrVal (socketServer.Handle()) );
TInt connPtr = REINTERPRET_CAST(TInt, &(connection));
connInfo.SetPropertyL ( strP.StringF(HTTP::EHttpSocketConnection,RHTTPSession::GetTable() ), THTTPHdrVal (connPtr) );

RHTTPTransaction transaction = m_Session.OpenTransactionL(m_uri, *m_pCRemoteCourseCallback, RStringF());

transaction.SubmitL();


any ideas?

thanks