postcontent in single.php not showing

Hi,

I tried to install facebook social plugin — added the code to the header, sidebar and single.php

It didn’t work, so I deleted everything. Blog index page loads find, but when I click a single post, page only loads down to <div class=”postcontent”> (where I originally posted the fb code).

http://blog.adult-stem-cells.info/stem-cells-reverse-blindness-caused-by-burns/

I’ve tried deleting single.php and re-uploading, copy and pasting, changing the theme, re-uploading the theme, wordpress, etc, etc, but nothing seems to work.

Any help would be appreciated.

PS Here is the current single.php code:

[Code moderated as per the Forum Rules. Please use the pastebin]