blog post's page won't show up on it's own page

I’m using Twenty Eleven with a static home page and a blog under a separate tab. The blog post is showing up under the blog tab but when I click on the title to go to the blog posts “solo” page i get this error message and can’t see the blog post. Any Idea what this means and how I fix it. – thanks

Warning: include(/home/content/43/6814643/html/holidazedbook/wp-content/themes/twentyeleven/mediatemplatesingle.php) [function.include]: failed to open stream: No such file or directory in /home/content/43/6814643/html/holidazedbook/wp-content/plugins/authoritysqueeze/library/core/template-redirects.php on line 107

Warning: include() [function.include]: Failed opening ‘/home/content/43/6814643/html/holidazedbook/wp-content/themes/twentyeleven/mediatemplatesingle.php’ for inclusion (include_path=’.:/usr/local/php5/lib/php’) in /home/content/43/6814643/html/holidazedbook/wp-content/plugins/authoritysqueeze/library/core/template-redirects.php on line 107