Page not found when click “Next Page” in Arthemia WP Themes

How to solve this issue?
Check your index.php for Arthemia themes and find this code:

query_posts(”cat=-10,-11,-1&paged=$page&posts_per_page=5″);

Make sure post_per_page variable in there has the same value with your variable in Plugin > Reading > Blog pages show at most >

After you match the value, this issue will be solved.