We are unable to duplicate the issue you are encountering in our test and production sites.

In order to further help you determine why your installation is encountering a "blank" page, we need to know what PHP error is occurring to cause the "blank" page. If nothing is logged in the Zen Cart debug logs (you do have these enabled and the directory is writable by the webserver, correct?)... Then the next step is to look in the server error logs (your hosting provider should be able to assist you - and may need to enable logging of PHP warnings / errors).