[@robin-w Moderator 12 years, 5 months ago]

ok, presume this is a new install?

also presume that you have set yourself up as at least participant in the user profile – the forums permissions are near the bottom when you edit a user

If so then

maybe a plugin or theme conflict

try

Plugins

Deactivate all but bbpress and see if this fixes. if it does, re-enable one at a time to see which is causing the error.

Themes

If plugins don’t pinpoint the problem, switch to a default theme such as twentytwelve, and see if this fixes.