Problem with 7.3 after upgrade

After upgrading to 7.3 things went quite well for a while, but now the view for one of my groups seems to be horrifically broken - it keeps changing the title of the page to %1, and pulls what appear to be random articles belonging to different groups.

I finally built a different view that pulls the articles out in a different way than using OG, and that has gotten the site to run again - but I don't understand what is going on. CLearing the views cache makes the regular group title come back for a little while, but the nodes it is pulling up are still wrong.

This is with views 1.6.

It also returns this error whenever I access the page

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '= og_ancestry. INNER JOIN node_access na ON na.nid = node.nid LEFT JOIN node n ' at line 1 query: SELECT DISTINCT(node.nid), node.sticky AS node_sticky, node.created AS node_created_created FROM node node LEFT JOIN og_ancestry og_ancestry ON . = og_ancestry. INNER JOIN node_access na ON na.nid = node.nid LEFT JOIN node n ON node.nid = n.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 ( (node.status = '1') AND (og_ancestry.group_nid = 3) ) ORDER BY node_sticky DESC, node_created_created DESC LIMIT 0, 20 in /var/www/drupalexp/includes/database.mysqli.inc on line 151.

The other organic groups on the site seem to continue to work properly.