[Plugin: Random Redirect] How do I use the parameters?

the random_post_type parameter works fine for me, but the random_cat_id just won’t for my blog…

e.g. http://c0o1.com/?random&random_post_type=page works fine.

My category IDs are 8, 18 and 19,
e.g. http://www.c0o1.com/?random&random_cat_id=8
returns me to my newest post.

Can you please take a look?

I’m having the same problem with the categories too, a few of them work but most of them dont. Check it out at http://www.incomingsound.net/ hover over the Discover button in the nav.