The URL ishttp://www.blacklighthouse.com/c5/index.php/login/-/logout....
Do I need to put a .htaccess file in the /c5 subdirectory?
I'm really excited about this CMS. It looks sweet!
I've never seen that particular error before. It seems to me like an odd server configuration issue, given that it says "php4" when obviously your site is running PHP5 just fine, since C5 seems to run without a hitch.
Incidentally, when _I_ follow your link (after stripping out the period from the URL) it redirects me back to the home page without any kind of strange popups, etc.. This is in Safari and in Firefox.
Good luck with Joomla.
For whatever reason, things seem to be working fine now.
I apologize for the "threat". I play with c5 some more now.
Glad it's working now.