Can't Edit Category

[Gallery]

I went to edit all my category's but with two of them I get the following message:
(the others work perfectly)

Parameters required for 'updatecat' operation not supplied !

what does it mean? and how can I fix this?

the funny thing is. both category's I'm trying to edit have the words beauty and the beast in it. Is this just coincidence?

Hopefully someone can help. thanks!

[Gallery]

I've found out I can't create a category with the word 'Beast'

:/

[Nibbler]

Talk to your webhost.