Yahoo hosted blog blanks after upload of theme

My blog is hosted by Yahoo.

I uploaded a new theme (freshy2) per the directions on the WordPress dashboard. I uploaded the files under wp-content/themes. Now I seem to have no themes, no dashboard, no nothing… the files show up on the directory I just see a blank white page when I try to get anything related to worpress or my blog (pyramidodi.com/blog)

Any thoughts??????