I have three categories created: General, Site News, and Other. Whenever I go to post a new message, the column on the editing page to select the category doesn't appear. All the entries go into the General category, but some don't belong there. I can manually change the entries' categories via PHPmyAdmin and editing the MySQL directly, but I want that column to appear. What's wrong and why isn't it appearing? How can I get it to appear again.