Index: /trunk/src/VBox/Additions/WINNT/VBoxTray/VBoxTray.cpp
===================================================================
--- /trunk/src/VBox/Additions/WINNT/VBoxTray/VBoxTray.cpp	(revision 81187)
+++ /trunk/src/VBox/Additions/WINNT/VBoxTray/VBoxTray.cpp	(revision 81188)
@@ -421,5 +421,6 @@
         }
 
-        if (pSvc->pDesc->pfnDestroy)
+        if (   pSvc->pDesc->pfnDestroy
+            && pSvc->pInstance) /* pInstance might be NULL if initialization of a service failed. */
         {
             LogRel2(("Terminating service '%s' ...\n", pSvc->pDesc->pszName));