DenBolle

Mhm.. You should wonder if it’s wordpress, the theme or the crappy browser you’re using is causing the problem.

Some more testing :
php5/upgrade wp2.9 / default category set up.

–> creating post title bla, body “bla” , save draft –> error.
When I look into the draft what actually is saved anyway –> no catagory is present…..

Eh.. that didn’t solve it. What I’ve noticed is this :
– 2.9 hasn’t got any default category when you’re posting a new post (in 2.8.x it was “Uncatagorized”) and leaves that empty. Meaning the post will be submitted without any category, and that causes I think the error we’re seeing.

I’ve got the same issue, upgrading to php5 did solve it. WP 2.9 relies more in php5 than advertised I think.