PostgreSQL Grouping error

Thanks much for your help working through these.

I am using postgresql. If I navigate to my subscription tab (/user/1/subscriptions/node), and click on pages/threads, I now get the following:

PDOException: SQLSTATE[42803]: Grouping error: 7 ERROR: column "c.cid" must appear in the GROUP BY clause or be used in an aggregate function: SELECT c.* FROM {comment} c WHERE (c.nid IN (SELECT CAST(s.value AS decimal) AS value FROM {subscriptions} s WHERE (s.module = :db_condition_placeholder_0) AND (s.field = :db_condition_placeholder_1) AND (s.recipient_uid = :db_condition_placeholder_2) )) AND (c.uid = :db_condition_placeholder_3) GROUP BY c.nid; Array ( [:db_condition_placeholder_0] => node [:db_condition_placeholder_1] => nid [:db_condition_placeholder_2] => 1 [:db_condition_placeholder_3] => 1 ) in _subscriptions_content_node_form() (line 186 of /mypath/modules/subscriptions/subscriptions_content.admin.inc).