Qt 4/Windows: Active Qt WebBrowser example crashes

0	QList<QPointer<QWidget> >::QList<QPointer<QWidget> >	qlist.h	122	0x730054b8	
1	QForeachContainer<QList<QPointer<QWidget> > >::QForeachContainer<QList<QPointer<QWidget> > >	qglobal.h	2394	0x73005439	
2	qForeachContainerNew<QList<QPointer<QWidget> > >	qglobal.h	2404	0x73005395	
3	QWidgetPrivate::setParent_sys	qwidget_win.cpp	636	0x72ffe9ca	
4	QWidget::setParent	qwidget.cpp	10215	0x72f8775b	
5	QWidget::setParent	qwidget.cpp	10161	0x72f8743f	
6	QWidgetAction::setDefaultWidget	qwidgetaction.cpp	151	0x72fa8d81	
7	QToolBar::addWidget	qtoolbar.cpp	914	0x736bbdd0	
8	Ui_MainWindow::setupUi	ui_mainwindow.h	138	0x7ff773f98e86	
9	MainWindow::MainWindow	main.cpp	84	0x7ff773f9338c	
10	main	main.cpp	180	0x7ff773f94005	
11	WinMain	qtmain_win.cpp	131	0x7ff773fceea1	
12	__tmainCRTStartup	crtexe.c	618	0x7ff773fce0a1	
13	WinMainCRTStartup	crtexe.c	466	0x7ff773fcde1e	
14	BaseThreadInitThunk	KERNEL32		0x7ffb1d2615cd	
15	RtlUserThreadStart	ntdll		0x7ffb1e0643d1