Torbutton 1.3.3 does not work with Firefox 4.0.1

Upon updating Firefox to 4.0.1 Torbutton was automatically disabled. I then attempted to install Torbutton 1.3.3, but received the following error message :

"Torbutton could not be installed because it is not compatible with Firefox 4.0.1."

Trac:
Username: sjly