I've downloaded everything, created a new store directory on my site, and FTPd everything as directed. I go to my site/store directory/zc_install. I get a welcome screen, and I click Continue. I get the GNU license screen; I agree and continue. The next thing I see is this:

Error 500 - Internal Server Error

An error was encountered while processing your request. Typically this is a temporary condition. Please contact the web site owner for further assistance.

Got any idea what happened?

Thanks.