I'm having trouble with the plugin under WP 2.6.2. When I activate it I lose the ability to use any of the advanced page options such as "custom fields". I don't have a problem with posts. I thought there was a clash with another plugin (CMS Post Control), but I have the same issue with all plugins turned off. I did have it in a subfolder but pulled it out and put the plugin in the root of the plugin directory. Same results. The version is 18.104.22.168.
Any ideas as to how to fix this?