DirectoryIndex index.phtml

[Anon]

I'm stumped.

I have a .htaccess file that works when it contains:

ErrorDocument 404 http://www.flex.com/~tru/missing.html
AddType application/x-httpd-php .php
AddType application/x-httpd-php .php3
AddType application/x-httpd-php .phtml

But as soon as I include:

DirectoryIndex index.phtml

in the file, I can't process php files in any of the extensions, 404 errors aren't routed properly, and index.phtml files aren't loaded up right.

Any ideas?