"Page 2" Problem

The problem is when i am on my home page and when i click on page navi bar “2” it gives me that problem:

example.com/page/2/

Check this: http://www.urunkatalogu.org/
When i click http://www.urunkatalogu.org/page/2/

It shows:

No Results Found
The page you requested could not be found. Try refining your search, or use the navigation above to locate the post.

HOW CAN I FIX IT?

http://wordpress.org/extend/plugins/wp-pagenavi/