Index: /trunk/src/VBox/Main/src-server/MediumImpl.cpp
===================================================================
--- /trunk/src/VBox/Main/src-server/MediumImpl.cpp	(revision 68788)
+++ /trunk/src/VBox/Main/src-server/MediumImpl.cpp	(revision 68789)
@@ -9276,5 +9276,5 @@
                 vrc = VDClose(hdd, true /* fDelete */);
 
-            if (RT_FAILURE(vrc))
+            if (RT_FAILURE(vrc) && vrc != VERR_FILE_NOT_FOUND)
                 throw setError(VBOX_E_FILE_ERROR,
                                tr("Could not delete the medium storage unit '%s'%s"),