[gr8rcake]

I tried the fix too and got the DB error.

SELECT user.userid AS user_id, user.email AS user_email, invitation.email AS inv_email, invitation.acceptedby as inv_id
                                        FROM vb_user
                                        LEFT JOIN vb_invitation
                                        ON user.userid = invitation.acceptedby OR user.userid = invitation.email
                                        WHERE user.email = 'test@test.com'
                                        OR invitation.email = 'test@test.com';

MySQL Error  : Unknown column 'user.userid' in 'field list'

I think it is triggered by this code in the XML file:

	$invitationcheck = $db->query_read("SELECT user.userid AS user_id, user.email AS user_email, invitation.email AS inv_email, invitation.acceptedby as inv_id
 										FROM " . TABLE_PREFIX . "user
 										LEFT JOIN " . TABLE_PREFIX . "invitation
 										ON user.userid = invitation.acceptedby OR user.userid = invitation.email
										WHERE user.email = '" . $db->escape_string($vbulletin->GPC['email']) . "'
										OR invitation.email = '" . $db->escape_string($vbulletin->GPC['email']) . "'
										");

The reason why the token fix may be working with some people and not others is that the plugin hits another bug in the code later on.

I suspect the new bug is related to installing vBulletin with a prefix on your DB tables (TABLE_PREFIX).

Any other ideas? I'm only a casual programmer.