Check file existence

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@7041 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/Utils.py

@@ -363,6 +363,7 @@ def removeLocalPropertySheet(class_id):
   instance_home = getConfiguration().instancehome
   path = os.path.join(instance_home, "PropertySheet")
   path = os.path.join(path, "%s.py" % class_id)
+  if os.path.exists(path):
     os.remove(path)
 
 def readLocalPropertySheet(class_id):