Template suddenly not showing up

Hi friend,

My site was working properly and suddenly today the template is not loading. on the main page only the left column is loaded in the default template. varoxcomDOTcom

The admin part is working fine, except the template select option, where I get this error:
DIR_FS_CATALOG_TEMPLATES NOT SET

I checked the configure.php in the admin/includes and it is set.
define('DIR_FS_CATALOG_TEMPLATES', DIR_FS_CATALOG . 'includes/templates/');

I am using Zen Cart 1.3.8a and haven't made any changes in the last year and everything was working fine.

Plesae Help, Thanks

Hard to tell from here, but it looks like your stylesheet and other template files are missing/corrupted. The HEADING_TITLE woul;d suggest the same. Is it possible you've been hacked ?

Really dont know, where could I start form.
On first view I can see the template folders and files.

As i cannot enter the template select option I cannot chane to the default or install another template.

Is there any place where I could set the tempalte to defalut or any other which I have installed????