For anyone using Perspectives with SeaMonkey, two bugs have been fixed and Perspectives and SeaMonkey are once again compatible. You can download an updated version directly from the Mozilla Addons site , or wait for it to be automatically published after it has been reviewed by the Mozilla Addons team.
Many thanks to the person who sent a Firefox Compatibility Report! I have added a note to the Perspectives tests to ensure SeaMonkey is tested more thoroughly in future releases.