dbtuner.views.inc sql error

Hello, on my drupal 6 site i update to the new views module 6.x-3.0-rc3 unfortunately i can´t change now something on a view. Nothing will be saved and i only show this error ..so i report it here.

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: EXPLAIN in ./sites/all/modules/dbtuner/dbtuner.views.inc on line 9.

thanks