MySQL error when including a file
 

I am using a php include to get the left navbar of my site to use in my forum. The problem is, whenever I do this, I get an error from the forum saying:

Invalid SQL:
SELECT
user.username, (user.options & 512) AS invisible, user.usergroupid,
session.userid, session.inforum, session.lastactivity,
IF(displaygroupid=0, user.usergroupid, displaygroupid) AS displaygroupid
FROM session AS session
LEFT JOIN user AS user ON(user.userid = session.userid)
WHERE session.lastactivity > 1101222104
ORDER BY username ASC

mysql error: Table 'understa_main.session' doesn't exist

Now, in my leftnav there is a query to a different database. Could it be that I need to close the connection to that database in the leftnav file? If so, how do I close a connection once I've queried the database?

As a follow-up, I added mysql_close($dbh); to the end of the query in the leftnav and I still get the error. It looks as though vbulletin tries to access my database instead of it's own. Any ideas how to fix this?

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