New Blog Templates Screenshot Bug

Ever since I upgraded to Wordpress 3.5 I have 2 screenshots in my list of blog templates (on the front end) that pull from the following: <img src="../wp-content/themes/twentytwelve/screenshot.png">

When I look at the blog template screenshots from the admin it shows it just fine, but on the front end when someone is selecting a site it shows that Twenty Twelve image. Please advise on this issue.