GD Custom Posts and Taxonomies Tools requires a minimum of WordPress version 3.0 with PHP 5.0. You can’t use it with self-hosted WordPress.com (or other self-hosted system that don’t allow installation of third-party plugins). Plugin can be used with multisite/network installations, and each website in the network can set up own plugin.
Plugin is tested with WordPress 3.2.1 and WirdPress 3.3.1.
Plugin will work with any theme that supports custom post types and custom taxonomies according to the WordPress specification. This includes use of proper theme templates for custom post types and custom taxonomies. Most themes available today can be used, but there are some themes that don’t implement this as it should be, and until they have that issue fixed, you can’t use this plugin with such themes.
Some themes, like ones based on Genesis Framework have own way of implementing theme templates, you need to consult their support for the help with that.
Plugin is tested with 5.2.6, 5.3.3 and 5.3.8. It should be working with any version of PHP 5.0, 5.1, 5.2, 5.3 and newer versions.