I got massive error at nodeprofile CCK

I have nodeprofile CCK at my site, so when I logged in as a dummy user as "aaa", I get this error:

* warning: implode(): Bad arguments. in /home/normann/public_html/community/sites/all/modules/private_nodes/private_nodes.module on line 203.
* user warning: 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 ')) OR n.uid=10)) AND ( n.status = 1 AND ((e.event_start >= 1185944400 AND e.eve' at line 1 query: SELECT DISTINCT(n.nid), e.event_start FROM node n INNER JOIN event e ON n.nid = e.nid INNER JOIN node_access na ON na.nid = n.nid LEFT OUTER JOIN private_nodes pn ON pn.nid = n.nid WHERE (na.grant_view >= 1 AND ((na.gid = 0 AND na.realm = 'all'))) AND ((pn.nid is null OR (pn.level=1 AND n.uid IN ()) OR n.uid=10)) AND ( n.status = 1 AND ((e.event_start >= 1185944400 AND e.event_start <= 1188622799) OR (e.event_end >= 1185944400 AND e.event_end <= 1188622799) OR (e.event_start <= 1185944400 AND e.event_end >= 1188622799)) ) ORDER BY event_start in /home/normann/public_html/community/includes/database.mysql.inc on line 172.
* warning: implode(): Bad arguments. in /home/normann/public_html/community/sites/all/modules/private_nodes/private_nodes.module on line 203.
* user warning: 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 ')) OR n.uid=10)) AND ( n.status = 1 AND (((e.event_start != e.event_end) AND (1' at line 1 query: SELECT DISTINCT(n.nid), n.title, n.type, n.status, n.changed, e.event_start, e.event_end FROM node n INNER JOIN event e ON n.nid = e.nid INNER JOIN node_access na ON na.nid = n.nid LEFT OUTER JOIN private_nodes pn ON pn.nid = n.nid WHERE (na.grant_view >= 1 AND ((na.gid = 0 AND na.realm = 'all'))) AND ((pn.nid is null OR (pn.level=1 AND n.uid IN ()) OR n.uid=10)) AND ( n.status = 1 AND (((e.event_start != e.event_end) AND (1186791538 >= e.event_start AND 1186791538 < e.event_end)) OR ((e.event_start = e.event_end) AND (1186791538 <= e.event_start + 7200 )) OR e.event_start >= 1186791538) ) ORDER BY event_start LIMIT 6 in /home/normann/public_html/community/includes/database.mysql.inc on line 172.
* warning: implode(): Bad arguments. in /home/normann/public_html/community/sites/all/modules/private_nodes/private_nodes.module on line 203.
* user warning: 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 ')) OR node.uid=10)) LIMIT 0, 20' at line 1 query: SELECT DISTINCT(node.nid) FROM node node INNER JOIN node_access na ON na.nid = node.nid LEFT OUTER JOIN private_nodes pn ON pn.nid = node.nid WHERE (na.grant_view >= 1 AND ((na.gid = 0 AND na.realm = 'all'))) AND ((pn.nid is null OR (pn.level=1 AND node.uid IN ()) OR node.uid=10)) LIMIT 0, 20 in /home/normann/public_html/community/includes/database.mysql.inc on line 172.

The funny thing is that this doesn't apply to other users, only aaa.