Does anyone know what this WordPress error message is?

[MagicMan]

Does anyone know what this error message is?

This is affecting my customer login.

Warning: require_once(includes/modules/template-loader.php) [function.require-once]: failed to open stream: No such file or directory in /home/xxxxxxx/public_html/store/includes/templates/template_default/templates/tpl_wordpress_default.php on line 30

Fatal error: require_once() [function.require]: Failed opening required 'includes/modules/template-loader.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/xxxxxxxx/public_html/store/includes/templates/template_default/templates/tpl_wordpress_default.php on line 30


Here is what line 30 looks like.

require_once(DIR_WS_MODULES . zen_get_module_directory('template-loader.php'));

Thanks for the help guys and gals.
Thanks for the help.

[RescoCCC]

It is saying that it isn't finding the file template-loader.php. That means that either the file doesn't exist in the directory includes/modules/, or it is damaged/corrupted.