I am running WP 3.05 with Buddypress 1.2.7
I am testing the Wiki plugin and get the following error when I click the History, Edit or Create new tabs.
Sorry, but you are looking for something that isn't here."
I went as far as to delete/uninstall the http://wordpress.org/extend/plugins/bp-wiki/ plugin to see if that worked without success.
The wiki pages open and can be viewed.