I found the answer to my Mac Help problem (all my Help links gave the result: "TopicListNoResults").
A help file named "DataDirect help.help" in my <Disk>/Library/Documentation/Help/ folder was the culprit. After deleting it, Mac Help once again works fine. I'm not exactly sure where this file came from, except that it is related to some ODBC utilities I had downloaded several months ago. I found the answer on the Apple discussion boards in the form of a link to the following web site, which I would recommend to anyone who's having trouble with the Mac's Help Viewer application: http://www.thexlab.com/faqs/helpviewer.html | The next meeting of the Louisville Computer Society will | be April 27. The LCS Web page is <http://www.kymac.org>. | This list's page is <http://erdos.math.louisville.edu/macgroup>.
