Error Logged when creating a book. Know what it means?

Howdy,

I recently updated a Drupal 5 site to Drupal 6. I'm now trying to create a Book using the Book Module. I always get errors in the log when I try to start a new book. Here is the error


Unknown column 'bid' in 'field list' query: SELECT DISTINCT(bid) FROM book in /Applications/MAMP/htdocs/DWP/modules/book/book.module on line 261.


Any ideas what is going on?

Thanks!