I love the Organize Series plugin, but image icons do not work with Amazon S3 for WordPress plugin. When S3 for WordPress is set to "Use Amazon S3 for storage when uploading via WordPress' upload tab", series icon images appear to upload fine but are never saved. Un-selecting this option in S3 for WordPress allows them to work, and it can then be re-selected after working with series icons.
I wonder if there is some function in Organize Series that is interfering with links to S3? Or is this an issue with S3 for WordPress?