Quote Originally Posted by Preben
That's odd. I have just installed the 1.3.0.2 and the Ultimate SEO - with no error like that. Sure you have updated all files you need to?

First time I tried, I got to a non SEF url at all. Then I tried once more, and it behaved just like you said...
Figured it out. I had mixed up the admin's html_output.php with the regular html_output.php. DOH!