Install Addons on Firefox 3 Beta 3
Wednesday, February 13th, 2008I just updated my firefox 3b2 to 3b3 this morning. After reading this review by MozillaLinks, guess you will do the same as i did 
However, there’s problem coming: i can’t use my previous addons which i really rely on so much. After some googling I finally got this cool Nightly Tester Tools from here.
I installed it immediately. Then i went to ‘Tools’->’Add-ons’ dialog, find the ‘Nightly Tester Tools’ on ‘Extensions’ tab, Click ‘Options’ and navigate to ‘Add-ons’ to ‘Disable add-on compatibility checking’ and then restart firefox.
It’s time foryou to get all of your those favorite addons back now. Enjoy.