"New Messages" only appearing for Admins
We are running Vanilla 2.2 and we appear to have lost the ability to allow "normal" members to use the conversations piece. Also when posting a discussion "Attach a file" only appears for Admins as well.
I know this must be permissions based but I have looked everywhere and can't seen any obvious issues.
If I try to access the "messages/add" url directly as a member I get a 404 Page Not Found straight away.
Any clues as to where I need to be looking please to solve this?