Use Core Folder.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@11854 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Form/Document/Preference.py

@@ -29,7 +29,7 @@
 from AccessControl import ClassSecurityInfo
 
 from Products.ERP5Type import Permissions, PropertySheet, Constraint, Interface
-from Products.ERP5Type.Document.Folder import Folder
+from Products.ERP5Type.Core.Folder import Folder
 from Products.ERP5Type.Cache import clearCache
 
 class Priority: