Upgrade errors

Hi, I just upgraded my site from 1.5 to 1.5.1. Now I get this error on my Manage page:

WordPress database error: [You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near ” at line 1]
SELECT category_nicename FROM uv_categories WHERE cat_ID=

It is repeated 1-4 times for each post. I did not get the error before the upgrade. I also have a clean install of 1.5.1 (not an upgrade) on the same site (different directory) with no errors.

My host (Bizland) uses PHP 4.3.10 and MySQL version 4.0.22.