electronish

! Eureka Eureka !

My case was:
My theme was passing in the argument: ‘posts_per_page’=>7
While my wordpress settings ( setting > reading > Blog pages show at most ) was 10

Solution:
Match the ‘posts_per_page’=>7 TO the setting > reading > Blog pages show at most = 7 ANd it will FIX !

! Eureka Eureka !

This is not a Pagenavi problem. Even if you disable pagenavi the “previous entry” page will show up 404.

My case was:
My theme was passing in the argument: ‘posts_per_page’=>7
While my wordpress settings ( setting > reading > Blog pages show at most ) was 10

So, wordpress thinks: According to Me there are 10 posts per page so, at 20 posts there is no third page. While the theme thinks, according to me there are 7 posts per page so there is a third page !

Solution:
Match the ‘posts_per_page’=>7 TO the setting > reading > Blog pages show at most = 7 ANd it will FIX !

I am having the same problem. My pages are also 404ing and after few days its working .. Can anyone answer on this ?