Problem with Addons

I downloaded the game client from the Warmane site, but the version with character models from WoD.
The sole problem is that my addons button doesn't even show up. I haven't changed anything, I checked the addons folder and they are already there, pre-installed with the client, but the button still doesn't show up.
I tried asking many people ingame but no one could really help me.

What you see in addons folder are Blizzard UI addons. There are no other pre-installed addons. Addons button in game won't show up unless you add more addons.