I just installed the update (2.5) on my site and it gave me this error on the site home page:
Fatal error: Call to a member function get_var() on a non-object in [...]/wordpress/wp-content/plugins/back-end-instructions/instructions.php on line 496
(The [...] is my edit. I'm using Twenty Eleven as a theme, and I've deactivated all other plugins to make sure it's not a conflict.)
If I replace line 495 with this:
global $post, $wpdb;
The error goes away, but I just wanted to make sure that this is actually a solution and not just hiding the problem.
Again, thanks for the awesome plugin (and the awesome support)! Everything else is running super smoothly. :)