When I try to run setup.php I get a blank screen. I get the following error.

Fatal error: Call to undefined function gettext() in /Library/WebServer/Documents/zenphoto/zp-core/setup.php on line 21

What is gettext() and how do I correct this error?

thanks

http://www.zenphoto.org/support/topic.php?id=7022#post-41204

This post explains how to fix the error. gettext() is a PHP function used for internationalization so that multiple languages are supported.