Catch IndexError.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@4153 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/Utils.py

@@ -1393,7 +1393,7 @@ def createDefaultAccessors(property_holder, id, prop = None,
     default = prop.get('default')
     try:
       default = default[0]
-    except TypeError:
+    except (TypeError, IndexError):
       default = None
     accessor_name = 'get' + UpperCase(id)
     base_accessor = List.Getter(accessor_name, id, prop['type'], default = default,