[REG 3.3 -> 3.4] Crash when opening project

0	QmakeProjectManager::Internal::QmakeProjectImporter::import	qmakeprojectimporter.cpp	194	0x88a654c	
1	ProjectExplorer::TargetSetupPage::import	targetsetuppage.cpp	479	0x5239b1a6	
2	ProjectExplorer::TargetSetupPage::setupImports	targetsetuppage.cpp	346	0x5239aa37	
3	ProjectExplorer::TargetSetupPage::initializePage	targetsetuppage.cpp	205	0x52399fff	
4	ProjectExplorer::Internal::TargetSetupPageWrapper::TargetSetupPageWrapper	unconfiguredprojectpanel.cpp	70	0x523a53b3	
5	ProjectExplorer::`anonymous namespace'::<lambda95>::operator()	projectpanelfactory.h	76	0x5236c63a	
6	std::tr1::_Callable_obj<ProjectExplorer::`anonymous namespace'::<lambda95>,0>::_ApplyX<QWidget *,ProjectExplorer::Project * &>	xxcallobj	14	0x5236c565	
7	std::tr1::_Impl_no_alloc1<std::tr1::_Callable_obj<ProjectExplorer::`anonymous namespace'::<lambda95>,0>,QWidget *,ProjectExplorer::Project *>::_Do_call	xxfunction	66	0x5236b216	
8	std::tr1::_Function_impl1<QWidget *,ProjectExplorer::Project *>::operator()	xxfunction	155	0x5251904d	
9	ProjectExplorer::ProjectPanelFactory::createWidget	projectpanelfactory.cpp	96	0x52518fb6	
10	ProjectExplorer::Internal::WidgetCache::widgetFor	projectwindow.cpp	309	0x523941c0	
11	ProjectExplorer::Internal::ProjectWindow::showProperties	projectwindow.cpp	210	0x52393bae	
12	ProjectExplorer::Internal::ProjectWindow::qt_static_metacall	moc_projectwindow.cpp	100	0x52530f33	
13	QMetaObject::activate	qobject.cpp	3716	0x53e65370	
14	QMetaObject::activate	qobject.cpp	3582	0x53e64d81	
15	ProjectExplorer::Internal::DoubleTabWidget::currentIndexChanged	moc_doubletabwidget.cpp	126	0x5253e401	
16	ProjectExplorer::Internal::DoubleTabWidget::setCurrentIndex	doubletabwidget.cpp	129	0x524a566e	
17	ProjectExplorer::Internal::ProjectWindow::startupProjectChanged	projectwindow.cpp	197	0x52393b50	
18	ProjectExplorer::Internal::ProjectWindow::qt_static_metacall	moc_projectwindow.cpp	104	0x52530f81	
19	QMetaObject::activate	qobject.cpp	3716	0x53e65370	
...	<Mehr>