[Zope] more __len__ errors

[Scott Burton]

I am having a intermittent problem with ZCatalog(I think). I have a couple
of products that are catalog-aware and have been working. Then, out of
nowhere if I call <dtml-in "Catalog(meta_type='object')"> I get a __len__
error, when a few minutes before it worked. I looked at the undo list to see
if I have done anything to cause it but could not find anything. I delete
the cataloged objects as well as the objects themselves and re-create them.
Same problem. Here is the TB: