It seems that there is something wrong with the template file that you have posted. When I view the file all that it has on it is PK. I'm sure that there is a simple explanation for the result that you are experiencing but it is difficult for me to say just what is off without being able to see the problem and the code behind it. To get to the bottom of this post back with these things:
the templates folder from your site in a zip archive
the css folder for the site in a zip archive
the images that are used in the images folder in a zip archive
the bad page in question, and a good page from the site that is showing all of the regions
With these three parts I will be able to reproduce what you are seeing and experiencing and help you get past this.
