This addon is a plugin. You need to extract it to your /plugins folder to install it.
Invite-Only system in which guests need an invite from forum members to access the forum.
Sponsored by ADM.
Change log: + 0.3.1: - Fixed installer bug when the invitation fields in the user table exist already. - More friendly link (thanks to gpreston). + 0.3.0: - Fix CSRF vulnerability. + 0.2.2: - Correct a bug with the forum presentation option. + 0.2.1: - Correct a bug in forcing enabling whispers.