Image Attachments aims to provide a simple way to manage image attachments with pages, posts and custom post-types.
Simply drop the image-attachments folder into your wp-content/plugins directory and activate in the WordPress Admin.
The image attachment management tools are not enabled by default on any post-types. To enable the attachment management tools for a given post-type, navigate to Plugins > Attachment Images and turn Image Attachments on for your desired post type.
The management tools are displayed on the Post Edit screen for any post-type for which they're enabled.