[xwiki-users] Group Creation Issues

Hi, I've just installed xwiki (1.4.9828), using the enterprise .war, with the DB backed into PostgreSQL (using the latest jdbc4 8.3-603 driver). Things seem to be mostly working, however I am unable to create groups. When I try to 'Add new group' and fill out the 'Create new group' form, no new group appears. I can however create pages & users. However it does look as though it is doing _something_ as I can see rows being added to the xwikiobjects table e.g.: -1972220124;0;"XWiki.foo";"XWiki.TagClass" What can I do to debug this issue? Thanks, David. David Brain dbrain(a)bandwidth.com 919.297.1078