That is not clear whether author is interested in maintaining the plugin project. Anyhow, big thanks for creating the original version!
Those who experience System.ArgumentException, please consider installing an older version of Paint.NET. I have tried Paint.NET v3.5.11 and it worked. CAUTION: older version's Paint.NET installer will delete your newer version (even if a different folder is selected at the setup stage), and possibly the customizations. So, backup, backup, backup!