Hi all .. I struggled with this myself today, so I summed up the wisdom of the archives for those who come after ;) To use Xron on Zope 2.4.x, some hackery is required .. 1. Import DateTime correctly. Instead of: from Globals import DateTime do this: from DateTime import DateTime You need to do that once each in 'Dispatcher.py' and in 'XronDTMLMethod.py' 2. Implement the patches in this thread: http://lists.zope.org/pipermail/zope-dev/2001-July/012486.html In short: you need to do this: from Products.PluginIndexes.FieldIndex.FieldIndex import FieldIndex and instead of this: self._catalog.addIndex('name', 'FieldIndex') you now need to do this in a couple of places: self._catalog.addIndex('name', UnIndex('name')) 3. Follow the workaround described here: http://lists.zope.org/pipermail/zope/2001-April/087151.html (To get around bad interaction between Xron and 'Z2.py' on startup.) This is a drag. It has to happen every time you restart Zope. Yawn. I tried to mitigate it by running something like this:: cd lib/python/Products/Xron mv __init__.py __init__.py.not rm -f __init__.pyc cd ../../../../ (which I called called './xron_begone') from './start'. Then call http://server/Control_Panel/Products/Xron/manage_performRefresh and finally run './xron_comeback', which is the inverse of './xron_begone'. (Anyone have any better suggestions?) 4. Slay the dragon hinted at here: http://lists.zope.org/pipermail/zope-dev/2001-July/012502.html AFAIK, this is fixed by providing authentication information in 'Dispatcher.py':: (headers,response)=rpc(furl,'username','password') # Fire event You should now be running Xron without any more problems. Unless I missed something, of course! Corrections and elaborations welcome. Regards, Jean Jordaan