diff --git a/molior-build-upload b/molior-build-upload
index 77bc36b..1a2349f 100755
--- a/molior-build-upload
+++ b/molior-build-upload
@@ -64,6 +64,10 @@ if [ -z "$VERSION" ]; then
     usage "No version specified"
 fi
 
+if [ -z "$MOLIOR_SERVER" ]; then
+    usage "No molior server specified"
+fi
+
 args=""
 for f in $@
 do
diff --git a/plugins/vbox.plugin b/plugins/vbox.plugin
index 1c00e78..7786241 100644
--- a/plugins/vbox.plugin
+++ b/plugins/vbox.plugin
@@ -18,7 +18,7 @@ preinit_deployment_vbox()
       OLD_KERNEL=0
   fi
 
-  log "using virtualbox "`vboxmanage -v`
+  log "using virtualbox "`vboxmanage -v | grep -v -e WARNING -e '^ ' -e '^$'`
 }
 
 init_deployment_vbox()