First off, I can't believe more people don't use Platypus - I loves loves loves it. Second, a HUGE thank you to @RaXelliX for getting it working for FF4, I am grateful someone else did what I am probably too lazy to do.
I was in communication with Scott (the author of Platypus) some 7 months ago, asking if I could help get it updated, but got very busy soon after. I just wrote to him to find out if anything has changed with it, maybe I will get things going on it...but then again, maybe not. :)