For Pagination Wordpress Plugin

If you request next error in category page :

WordPress database error: [Unknown column ‘post_id’ in ‘field list’]
SELECT count(DISTINCT post_id) FROM wp_posts LEFT JOIN
…

Try this hack:

1. Open File:

wp-content/plugins/pagination.php

2. Search:

$sqlStr = "SELECT count(DISTINCT post_id) FROM $fromwhere";
(at line 22)

3. Change with:

$sqlStr = "SELECT count(DISTINCT ID) FROM $fromwhere";

4. Save file. DONE !