Index: vws
==================================================================
--- vws
+++ vws
@@ -10,10 +10,12 @@
 def find_vm(name):
     search_path=[os.environ['HOME']+"/VWs",
         config.get("directories","SharedVMs"),
         config.get("directories","AutostartVMs")]
     for dirname in search_path:
+        if not os.access(dirname,os.X_OK):
+            continue
         if name in os.listdir(dirname):
             return dirname+"/"+name
     raise ValueError("Machine "+name+" not found.")