Swish module outputs truncated WHERE cluase

Using Drupal 5.19 on Apache 2.2.9 on FreeBSD 6.2, the Swish-E Indexer module produces the following error upon submitting a search:

# warning: Invalid argument supplied for foreach() in /drupal/www-dev.elaw.org/public/drupal-5.19/modules/node/node.module on line 561.
# warning: implode() [function.implode]: Bad arguments. in /drupal/www-dev.elaw.org/public/drupal-5.19/modules/node/node.module on line 565.
# 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 '' at line 1 query: SELECT n.nid, n.vid, n.type, n.status, n.created, n.changed, n.comment, n.promote, n.sticky, r.timestamp AS revision_timestamp, r.title, r.body, r.teaser, r.log, r.format, u.uid, u.name, u.picture, u.data FROM node n INNER JOIN users u ON u.uid = n.uid INNER JOIN node_revisions r ON r.vid = n.vid WHERE in /drupal/www-dev.elaw.org/public/drupal-5.19/includes/database.mysql.inc on line 174.

Full traceback is attached.
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Glenn Gillis
Information Technology Manager
Environmental Law Alliance Worldwide
U.S. Office
http://www.elaw.org