Just tried installing Omeka 1.4.1 and a single issue with my install, is that mod_rewrite isn't being recognized.
This server is CentOS 6, running Apache-2.2.15 and PHP-5.3.2. I have other sites that rely on mod_rewrite (Wordpress, Drupal) on this same server and they work fine.
I've set AllowOverride to "All", and have tried the install with both "RewriteBase" set and not set. The Apache config for that virtual host is identical to the drupal and wordpress sites, which all have the same settings (via Puppet).
The URL being used to access the site is http://idhmc.tamu.edu/gallery . The domain in that path is for Wordpress and I'm using an Alias in Apache to redirect /gallery to Omeka.
When I set the RewriteBase I used /gallery/ for root's file and /install's was "/gallery/install/".
The only error in Apache logs is the test,
[Mon Sep 12 14:08:40 2011] [error] [client 188.8.131.52] File does not exist: /var/www/idhmcomeka.tamu.edu/html/install/check-mod-rewrite.html
Any other steps to troubleshoot are welcome, thanks!