I am back working with Zope 2.9.1 (yes I know it is long in the tooth but I am trying to avoid adding the pain of upgrading, having products fail and all the usually comes with upgrading if I can). I am looking for a strategy to schedule and carry out tasks at periodic future dates. I had a look at Xron (http://www.zope.org/Members/lstaffor/Xron/) but it either doesn't seem to work with 2.9.1 (or I can't get it to work). I install it in the products directory but it doesn't show up in the product directory when Zope restarts and naturally none of the objects it is supposed to supply can be added. I haven't investigated what the problem is (and am not even totally sure how to go about it). Is there something isn't obvious that I might be missing? Barring getting it to work are there any other alternatives?