Bukkit

What steps will reproduce the problem?
1.
2.
3.

What is the expected output? What do you see instead?

What version of the product are you using?
1.5.2

Do you have an error log of what happened?
Nope.

Please provide any additional information below.
I can't seem to create any altars. When I do, it says "You cannot build altars to that God" I've already checked with my permissions and configuration, but I still couldn't figure out what's the problem. Please help, thank you!