self is index 0 in aq_chain list, not -1... So portal_skins is (potentialy) index 1, not -2.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@11988 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/patches/OFSFolder.py

@@ -37,7 +37,7 @@ def Folder_setOb(self, id, object):
     return
   if len(aq_chain) < 2: # Acquisition context is not deep enough for context to possibly be below portal skins.
     return
-  portal_skins = aq_chain[-2]
+  portal_skins = aq_chain[1]
   if getattr(portal_skins, 'meta_type', '') != 'CMF Skins Tool' : # It is not a skin tool we're below.
     return
   _updateCacheEntry = getattr(portal_skins.aq_base, '_updateCacheEntry', None)