@DSHEPHERD - I'm not seeing any errors...
If you'd like to "start again", try dropping the
yarpp_title indexes on your
wp_posts table and then going to the YARPP settings page in your WP settings, which will rebuild those indexes.
Otherwise, the latest version of YARPP has a debug mode (add
?yarpp_debug=1 to your URL with any caching plugins off) which will print the SQL query that's being run in a HTML comment. You can try running that query directly in your database to see what error it gets (if any). If that's the problem, please print the SQL query here with the error message, or email me with it.
Thanks for the report!