Posts and pages
some has experienced that when clicked on some link blank page is displayed

that problem is there because of add page process of zencart

to add page in zencart we have to create four pages

* A new directory, includes/modules/pages/myNewPage/, containing a file called header_php.php

* A new file in the directory includes/templates/template_default/templates called tpl_myNewPage_default.php

* A new file, includes/extra_datafiles/myNewPage.php, defining your new page’s filename for the Zen Cart™ system

* A new language file, includes/languages/english/myNewPage.php

there is problem in includes/extra_datafiles/myNewPage.php

so dont add file in that folder may your problem solved ! ! !