Just found ZenPhoto and tried to install. I made it past the first few warnings about PHP gettext and magic.

I then encountered MySQL errors. I created a user, password, and database, and then updated the zp-config.php with the manual setting.

Now when I run index.php, all I get is a blank screen. The source code is below:
------------
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=windows-1252" http-equiv=Content-Type></HEAD>
<BODY></BODY></HTML>
------------

What should I look into next?

thank you,
Tim

Your server's error log.

Here's something from my error log.

Oct 4 13:12:28 server3 suhosin[8589]: ALERT - script tried to increase memory_limit to 100663296 bytes which is above the allowed value (attacker '66.138.28.150', file '/home/pabloybi/public_html/gallery/zp-core/functions-basic.php', line 63)

I just updated the memory limit to 128MB. restarted http and still get a blank screen. There are no new error messages now.

Then you should try a reinstall, probably something was not uploaded correctly.

tmallardi, are you running ZenPhoto on the Apache web server? I got the same behavior you describe when I tried to run ZenPhoto using the default lighttpd web server on my machine.