Ok, I have finally got my production DB to work. It loads the new XWiki with our old skin (but we decided to move to the new skin ;-) ) and you can save posts, etc. For very long now, I've been receiving exceptions regarding the xwikidocum0.xwdtitle_0 (kind of stuff, typed it out of my head) and XWiki.XWikiPreferences errors. The problem was in xwikilongs where 2 entries (rows if you will) had NULL values in the xwd_value column. I removed them and then received the Batch-error which Rudolf solved which I then applied to the wiki (his SQL query that is) and then it worked. Thanks for everyone's help and I hope that everyone would now be able to move to the new XWiki with Postgres. Just note that I too am using Postgres 8.2 now (upgrading wasn't an issue, just don't forget the JDBC drivers!). Regards, Dandre