I've found lots of topics on comments returning blank pages, but haven't found any with my particular problem.
My website: Http://tincl.net OR http://pretty-guardian.com/tincl
When someone clicks on the comment link it just goes to a blank page. I'm sure it's a problem in the theme, but I'm not sure where, or how to even go about finding it. The only reason there's a comment there now is because I had a different theme before this, and comments were fine then.