Try editing /admin/includes/classes/split_page_results.php
on line 49 you have:
Code:
      $offset = ($max_rows_per_page * ($current_page_number - 1));
Insert a new line below it and add the following:
Code:
// fix offset error on some versions
      if ($offset < 0) { $offset = 0; }
Hopefully this will stop the -10 from appearing, and start at 0 instead.