Debug issue (Qdialog)

Hi all,

Am encountering a strange debug error when executing some code. No errors or warnings on compilation, but on execution I am presented with an error that says

Quote:

ASSERT: "!parent ||parent->testAttribute(Qt::WA_State_Created)" in file dialogs\qfiledailog_win.cpp line 293"

It seems to be an issue with the opening of a filedialog to allow a user to select a file to be opened. It lets you wither abort, retry or ignore. Choosing ignore the program runs fine.

Any help would be appreciated. Now here's the troublesome code (simplified down into a dumb program)

// messing.cpp file
#include "messing.h"
#include <QtGui>

messing::messing(QWidget *parent, Qt::WFlags flags)
: QMainWindow(parent, flags)
{
open();
}

messing::~messing()
{

}

void messing::open()
{
QString fileName =
QFileDialog::getOpenFileName(this, tr("Open Xml File"),
QDir::currentPath(),
tr("Xml Files (*.xbel *.xml)"));
if (fileName.isEmpty())
return;

QFile file(fileName);
if (!file.open(QFile::ReadOnly | QFile::Text)) {
QMessageBox::warning(this, tr("Program"),
tr("Cannot read file %1:\n%2.")
.arg(fileName)
.arg(file.errorString()));
return;
}

}

// messing.h

#ifndef MESSING_H
#define MESSING_H

#include <QtGui/QMainWindow>
#include "ui_messing.h"

class messing : public QMainWindow
{
Q_OBJECT

public:
messing(QWidget *parent = 0, Qt::WFlags flags = 0);
~messing();

void open();

private:
Ui::messingClass ui;
};

#endif // MESSING_H

// main.cpp
#include <QtGui/QApplication>
#include "messing.h"

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
messing w;
w.show();
return a.exec();
}