Index: /trunk/src/VBox/Frontends/VirtualBox/src/VBoxAboutDlg.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/VBoxAboutDlg.cpp	(revision 68442)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/VBoxAboutDlg.cpp	(revision 68443)
@@ -107,5 +107,6 @@
 
     /* Make sure the dialog is deleted on pseudo-parent destruction: */
-    connect(m_pPseudoParent, &QObject::destroyed, this, &VBoxAboutDlg::close);
+    if (m_pPseudoParent)
+        connect(m_pPseudoParent, &QObject::destroyed, this, &VBoxAboutDlg::close);
 
     /* Choose default image: */