Author sorting problem - "Author Rank" filter is not displaying

I am have having problems getting my authors to sort last name of first author.

In this issue http://drupal.org/node/791572

rjerome suggests:

Could you try adding a "filter" = Biblio: Author Rank and set the value to 0, this should limit the query to only the first authors.

Problem is, I don't see "Author Rank" as a filter option, only "Author Address" and "Author Lastname". I have have biblio_views enabled. Am I missing something?

-- Kari