Index: /trunk/src/VBox/ImageMounter/vboximg-mount/vboximg-mount.cpp
===================================================================
--- /trunk/src/VBox/ImageMounter/vboximg-mount/vboximg-mount.cpp	(revision 76129)
+++ /trunk/src/VBox/ImageMounter/vboximg-mount/vboximg-mount.cpp	(revision 76130)
@@ -271,4 +271,7 @@
      * In this impl. that's always deemed a parsing error.
      */
+    if (*arg != '-') /* could be user's mount point */
+        return 1;
+
     return -1;
 }