iCal module causes strange interaction with Taxonony listings

Karen, I hope I am more helpful this time.

Here is the error I'm still getting in watchdog after restoring my database to a preblunder state. The location actually goes to a taxonomy listing, and the only link to the calendar is a rather odd inclusion of an I-cal link (which may be an old I-cal icon-- see attached image). When I turn the iCal module off, the error seems to go away. I have not really configured iCal on its settings page, so maybe this is more of a result of user error and configuration problems. Still, if it helps, here is the error:

Type: 	php
Date:	Friday, January 16, 2009 - 11:25am
User:	Anonymous
Location:	http://www.mysite.com/groups/departments/board_of_supervisors?page=0%2C0%2C5%2C0%2C0%2C0%2C6%2C2%2C0%2C0%2C0%2C0%2C5

Referrer:	

Message:	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 'IN ('231')) AND (node.nid NOT IN (1388)) )' at line 1 query: SELECT count( DISTINCT(node.nid)) FROM node node LEFT JOIN content_type_content_minutes_or_agenda_cck node_data_field_date_of_meeting ON node.vid = node_data_field_date_of_meeting.vid INNER JOIN node_access na ON na.nid = node.nid WHERE (na.grant_view >= 1 AND ((na.gid = 0 AND na.realm = 'all') OR (na.gid = 1 AND na.realm = 'content_access_rid') OR (na.gid = 1 AND na.realm = 'term_access'))) AND (node.type <> 'sitenotes') AND ( (.tid IN ('231')) AND (node.nid NOT IN (1388)) ) in /home/gov/alpinecounty/WWW/mysite.com/includes/database.mysql.inc on line 174.

Severity	error

The ical picture (attached) shows up at the bottom of the taxonomy listing, even though this is not a calendar view (although there are a few pages with embedded views of content with a date field). These view-pages (using view_field on these pages with CCK) are categorized with the specific taxonomy that is listed. Again, turning off iCal seems to make these errors disappear. Let me know if more information would be helpful.