Category, Tags, and Search Do Not Work in Theme

I recently uploaded your Yume theme, which I love, but I noticed categories and tags do not sort, and even the search yields no results. The pages just show everything, though everything is divided into categories.

Is this a 3.8 bug problem? I just started using WP, so 3.8 was my first install.

I have tried default permalinks and custom. These work when I switch the theme out, but do not work when I re-install Yume. I have even re-installed the original files to no effect.

Can someone point me to a solution please? I like the theme and would hate to abandon it for what I know must be an easy fix.

Thanks in advance.