Could you enable upload debugging (under Help), run an upload and then email me the file Rightload_FTP.txt from your Rightload directory? You can remove the lines that contain your username and password, obviously.
Your two feature requests will be added to the next version.
Why or how would Rightload get banned from Imageshack? I could create a new server file that copies the URLs to the sites, but this would break some other features, like thumbnails.