QTableWidget update problem

[mammenj]

I am having trouble updating cells in QTableWidget...below is the snippet

//fileds are qstringlist and they are not null//         
QTableWidgetItem *myitem = new QTableWidgetItem(fields[i]);
 
//qDebug() << "my item " << myitem->text();
 
// resultTable is the QTableWidget from UI form
ui->resultTable->setItem(row, i, myitem);

//fileds are qstringlist and they are not null//         
QTableWidgetItem *myitem = new QTableWidgetItem(fields[i]);

//qDebug() << "my item " << myitem->text();

// resultTable is the QTableWidget from UI form
ui->resultTable->setItem(row, i, myitem);

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The above code is in a loop to update the table. I am not sure where I am going wrong or is it a bug?
I am on Windows Vista with Qt SDK v2010.04(Open source)
Any help would be appreciated.
BTW this a sample program (Trip planner from Networking section) from C++ GUI Programming with QT 4 2nd edition