Paging problem with easy blogging

We have tried installing easy blogging plugin and it was working however we noticed that when we click the older post button to show the older posts in the blog (using twenty eleven theme), we noticed that it shows the Page not found with the "This is somewhat embarrassing, isn’t it?" Then I try to deactive the easy mode and I can see my previous posts. We have multisite enabled and I tried testing in other blogs in the network and it does the same thing. Is there some post modification we need to do to make the paging work?