Endless loop when creating a second gui project

(gdb) bt
#0  0x00007ff3dfc43836 in QMapData<Core::Id, QPointer<QAction> >::findNode (this=0x7f0183a65960, akey=...) at /home/nikolai/usr/qt-5.0.1/include/QtCore/qmap.h:287
#1  0x00007ff3dfc43064 in QMap<Core::Id, QPointer<QAction> >::value (this=0x2e528d8, akey=..., adefaultValue=...) at /home/nikolai/usr/qt-5.0.1/include/QtCore/qmap.h:585
#2  0x00007ff3dfc41e1b in Core::Internal::Action::setCurrentContext (this=0x2e52890, context=...)
    at /home/nikolai/dev/creator/qtcreator-master/src/plugins/coreplugin/actionmanager/command.cpp:410
#3  0x00007ff3dfc3de03 in Core::Internal::ActionManagerPrivate::setContext (this=0x21e49f0, context=...)
    at /home/nikolai/dev/creator/qtcreator-master/src/plugins/coreplugin/actionmanager/actionmanager.cpp:479
#4  0x00007ff3dfbf1d30 in Core::Internal::MainWindow::updateContext (this=0x21dc360) at /home/nikolai/dev/creator/qtcreator-master/src/plugins/coreplugin/mainwindow.cpp:1254
#5  0x00007ff3dfbf1bdd in Core::Internal::MainWindow::updateAdditionalContexts (this=0x21dc360, remove=..., add=...)
    at /home/nikolai/dev/creator/qtcreator-master/src/plugins/coreplugin/mainwindow.cpp:1235
#6  0x00007ff3dfcb31bc in Core::ICore::updateAdditionalContexts (remove=..., add=...) at /home/nikolai/dev/creator/qtcreator-master/src/plugins/coreplugin/icore.cpp:529
#7  0x00007ff3d782e54a in ProjectExplorer::ProjectExplorerPlugin::updateContext (this=0x22ae400)
    at /home/nikolai/dev/creator/qtcreator-master/src/plugins/projectexplorer/projectexplorer.cpp:1779
#8  0x00007ff3d782e957 in ProjectExplorer::ProjectExplorerPlugin::setCurrent (this=0x22ae400, project=0x3b04e00, filePath=..., node=0x3c8fd60)
    at /home/nikolai/dev/creator/qtcreator-master/src/plugins/projectexplorer/projectexplorer.cpp:1810
#9  0x00007ff3d782c1bb in ProjectExplorer::ProjectExplorerPlugin::setCurrentFile (this=0x22ae400, filePath=...)
    at /home/nikolai/dev/creator/qtcreator-master/src/plugins/projectexplorer/projectexplorer.cpp:1422
#10 0x00007ff3d79d8f2e in ProjectExplorer::ProjectExplorerPlugin::qt_static_metacall (_o=0x22ae400, _c=QMetaObject::InvokeMetaMethod, _id=64, _a=0x7fff83a65e50)
    at .moc/debug-shared/moc_projectexplorer.cpp:526
#11 0x00007ff3fe58fd9d in QMetaObject::activate (sender=0x21af780, signalOffset=3, local_signal_index=0, argv=0x7fff83a65e50) at kernel/qobject.cpp:3441
#12 0x00007ff3fe58f57c in QMetaObject::activate (sender=0x21af780, m=0x7ff3dfff9f80 <Core::DocumentManager::staticMetaObject>, local_signal_index=0, argv=0x7fff83a65e50)
    at kernel/qobject.cpp:3316
#13 0x00007ff3dfd14c01 in Core::DocumentManager::currentFileChanged (this=0x21af780, _t1=...) at .moc/debug-shared/moc_documentmanager.cpp:215
#14 0x00007ff3dfcfddfb in Core::DocumentManager::setCurrentFile (filePath=...) at /home/nikolai/dev/creator/qtcreator-master/src/plugins/coreplugin/documentmanager.cpp:1193
#15 0x00007ff3d782ed13 in ProjectExplorer::ProjectExplorerPlugin::setCurrent (this=0x22ae400, project=0x3b04e00, filePath=..., node=0x3c8fd60)
    at /home/nikolai/dev/creator/qtcreator-master/src/plugins/projectexplorer/projectexplorer.cpp:1830
#16 0x00007ff3d782c1bb in ProjectExplorer::ProjectExplorerPlugin::setCurrentFile (this=0x22ae400, filePath=...)
    at /home/nikolai/dev/creator/qtcreator-master/src/plugins/projectexplorer/projectexplorer.cpp:1422
#17 0x00007ff3d79d8f2e in ProjectExplorer::ProjectExplorerPlugin::qt_static_metacall (_o=0x22ae400, _c=QMetaObject::InvokeMetaMethod, _id=64, _a=0x7fff83a66170)
    at .moc/debug-shared/moc_projectexplorer.cpp:526
#18 0x00007ff3fe58fd9d in QMetaObject::activate (sender=0x21af780, signalOffset=3, local_signal_index=0, argv=0x7fff83a66170) at kernel/qobject.cpp:3441
#19 0x00007ff3fe58f57c in QMetaObject::activate (sender=0x21af780, m=0x7ff3dfff9f80 <Core::DocumentManager::staticMetaObject>, local_signal_index=0, argv=0x7fff83a66170)
    at kernel/qobject.cpp:3316
#20 0x00007ff3dfd14c01 in Core::DocumentManager::currentFileChanged (this=0x21af780, _t1=...) at .moc/debug-shared/moc_documentmanager.cpp:215
#21 0x00007ff3dfcfddfb in Core::DocumentManager::setCurrentFile (filePath=...) at /home/nikolai/dev/creator/qtcreator-master/src/plugins/coreplugin/documentmanager.cpp:1193
#22 0x00007ff3d782ed13 in ProjectExplorer::ProjectExplorerPlugin::setCurrent (this=0x22ae400, project=0x3b04e00, filePath=..., node=0x3c8fd60)
    at /home/nikolai/dev/creator/qtcreator-master/src/plugins/projectexplorer/projectexplorer.cpp:1830
#23 0x00007ff3d782c1bb in ProjectExplorer::ProjectExplorerPlugin::setCurrentFile (this=0x22ae400, filePath=...)
    at /home/nikolai/dev/creator/qtcreator-master/src/plugins/projectexplorer/projectexplorer.cpp:1422
#24 0x00007ff3d79d8f2e in ProjectExplorer::ProjectExplorerPlugin::qt_static_metacall (_o=0x22ae400, _c=QMetaObject::InvokeMetaMethod, _id=64, _a=0x7fff83a66490)
    at .moc/debug-shared/moc_projectexplorer.cpp:526
#25 0x00007ff3fe58fd9d in QMetaObject::activate (sender=0x21af780, signalOffset=3, local_signal_index=0, argv=0x7fff83a66490) at kernel/qobject.cpp:3441
#26 0x00007ff3fe58f57c in QMetaObject::activate (sender=0x21af780, m=0x7ff3dfff9f80 <Core::DocumentManager::staticMetaObject>, local_signal_index=0, argv=0x7fff83a66490)
    at kernel/qobject.cpp:3316
#27 0x00007ff3dfd14c01 in Core::DocumentManager::currentFileChanged (this=0x21af780, _t1=...) at .moc/debug-shared/moc_documentmanager.cpp:215
#28 0x00007ff3dfcfddfb in Core::DocumentManager::setCurrentFile (filePath=...) at /home/nikolai/dev/creator/qtcreator-master/src/plugins/coreplugin/documentmanager.cpp:1193
#29 0x00007ff3d782ed13 in ProjectExplorer::ProjectExplorerPlugin::setCurrent (this=0x22ae400, project=0x3b04e00, filePath=..., node=0x3c8fd60)
    at /home/nikolai/dev/creator/qtcreator-master/src/plugins/projectexplorer/projectexplorer.cpp:1830
#30 0x00007ff3d782c1bb in ProjectExplorer::ProjectExplorerPlugin::setCurrentFile (this=0x22ae400, filePath=...)
    at /home/nikolai/dev/creator/qtcreator-master/src/plugins/projectexplorer/projectexplorer.cpp:1422
#31 0x00007ff3d79d8f2e in ProjectExplorer::ProjectExplorerPlugin::qt_static_metacall (_o=0x22ae400, _c=QMetaObject::InvokeMetaMethod, _id=64, _a=0x7fff83a667b0)
    at .moc/debug-shared/moc_projectexplorer.cpp:526
#32 0x00007ff3fe58fd9d in QMetaObject::activate (sender=0x21af780, signalOffset=3, local_signal_index=0, argv=0x7fff83a667b0) at kernel/qobject.cpp:3441
#33 0x00007ff3fe58f57c in QMetaObject::activate (sender=0x21af780, m=0x7ff3dfff9f80 <Core::DocumentManager::staticMetaObject>, local_signal_index=0, argv=0x7fff83a667b0)
    at kernel/qobject.cpp:3316
#34 0x00007ff3dfd14c01 in Core::DocumentManager::currentFileChanged (this=0x21af780, _t1=...) at .moc/debug-shared/moc_documentmanager.cpp:215
...