@user702325
Here’s how i got it working fine on localhost:
I installed the plugin and set the option Place Pager Automatically in Template on “on“. Then in author.php i modified the original query to add some custom parameters. I added this:
global $query_string; // required
$posts = query_posts('posts_per_page=2');
right between rewind_posts();
and get_template_part( 'loop', 'author' );
.
That way i could customize the query (in this case i’m showing 2 posts per page) and get the plugin working perfectly.
This test is based on TwentyTen.