[Zope] ZTopics and 2.2 - solved.

[Jonathan Cheyne]

Just a follow up after much gnashing. I deleted the old catalog and
recreated. I also noticed that some ztopics displayed whilst others did
not (these are original ones not new). I tracked the difference to field
types in the catalog. the catalog is less tolerent of sloppy setups i
think - so i deleted an index and recreated as a different field type and
bingo - no probs.

Hope this makes sense.

Cheers

Jonathan