Modr8 conflicts with Organic Groups (OG)

Here's the error message:

user warning: Not unique table/alias: 'n' query: SELECT DISTINCT(e.nid) FROM event e INNER JOIN node n ON n.nid = e.nid INNER JOIN node_access na ON na.nid = e.nid LEFT JOIN node n ON e.nid = n.nid INNER JOIN og_ancestry oga ON n.nid = oga.nid WHERE (na.grant_view >= 1 AND ((na.gid = 0 AND na.realm = 'all') OR (na.gid = 1 AND na.realm = 'nodeaccess_rid') OR (na.gid = 0 AND na.realm = 'nodeaccess_uid') OR (na.gid = 0 AND na.realm = 'nodeaccess_author') OR (na.gid = 1 AND na.realm = 'node_privacy_byrole_role') OR (na.gid = 0 AND na.realm = 'node_privacy_byrole_user') OR (na.gid = 0 AND na.realm = 'og_public'))) AND ((n.moderate != 1)) AND (oga.group_nid = 54) AND ( e.event_start >= 1224678617 ) ORDER BY e.event_start in /home/xxxx/public_html/includes/database.mysql.inc on line 172.

The OG project page is at http://drupal.org/project/og

I was running both Nodeaccess 5.x-1.x-dev and Node Privacy By Role 5.x-1.0. I've turned off Nodeaccess but now I'm getting the following message:

user warning: Not unique table/alias: 'n' query: SELECT DISTINCT(e.nid) FROM event e INNER JOIN node n ON n.nid = e.nid INNER JOIN node_access na ON na.nid = e.nid LEFT JOIN node n ON e.nid = n.nid INNER JOIN og_ancestry oga ON n.nid = oga.nid WHERE (na.grant_view >= 1 AND ((na.gid = 0 AND na.realm = 'all') OR (na.gid = 1 AND na.realm = 'node_privacy_byrole_role') OR (na.gid = 0 AND na.realm = 'node_privacy_byrole_user') OR (na.gid = 0 AND na.realm = 'og_public'))) AND ((n.moderate != 1)) AND (oga.group_nid = 39) AND ( e.event_start >= 1224681774 ) ORDER BY e.event_start in /home/xxxx/public_html/includes/database.mysql.inc on line 172.

which is different than the earlier message.

Do I need to make an adjustment to the tables or run the update script?

Do you have any recommendations between those two modules as well and Content Access, TAC or Simple Access? I'm looking to do the following things:

1. allow anonymous users access to content only if it is tagged "Public".
2. allow an editor to manage and moderate only certain node types.

Thanks for your help.

I also turned off Node Privacy By Role and now get this error message:

user warning: Not unique table/alias: 'n' query: SELECT DISTINCT(e.nid) FROM event e INNER JOIN node n ON n.nid = e.nid INNER JOIN node_access na ON na.nid = e.nid LEFT JOIN node n ON e.nid = n.nid INNER JOIN og_ancestry oga ON n.nid = oga.nid WHERE (na.grant_view >= 1 AND ((na.gid = 0 AND na.realm = 'all') OR (na.gid = 0 AND na.realm = 'og_public'))) AND ((n.moderate != 1)) AND (oga.group_nid = 39) AND ( e.event_start >= 1224682640 ) ORDER BY e.event_start in /home/xxxx/public_html/includes/database.mysql.inc on line 172.

Forgot to tell you, in all cases, an Anonymous user can still see the content after the error message.

I've now determined that permissions are being honored, but this error message (or a similar one) still appears when a group home page is viewed by users that are not members of a group. Both Node Access and Node Privacy by Role are turned off.

Is there anything that can be done?

What additional information is required?

The problem was with the OG event (or maybe with OG Calendar, don't remember now).