Can’t create categories in WordPress?
While setting up auto blogs for a client, I wasn’t able to create categories in WordPress. After I provided the category name and hit ‘Add Category’ button, the portion of the wp-admin/categories.php page would show up the blog.
I’ve made available a screencast of this problem here.
The solution to this is to add the following to .htaccess:
<IfModule mod_security.c> SecFilterEngine Off SecFilterScanPOST Off </IfModule>