Thread:Extension talk:CategoryTree/no categories!

I try to view a tree of categories, nothing works. I have followed all the instructions; I can go to Special:CategoryTree but when I enter a category name, it doesn't exist.

Pages are created for all categories.

Help... Any help...

I'm hosted on HostGator using these versions: MediaWiki v1.20.0 PHP v5.3.15 (cgi-fcgi) MySQL v5.5.23-55

I downloaded CategoryTree just today as instructed.