MacOs + Firefox + PeraPeraKun Not working

[Drake Coldwinter Torregrosa]

Hello, I have the following setup:

MacOs 10.6.7
Firefox 4.0.1
PeraPeraKun 2.1.1
Dictionary 1.2 - new dictionaries (Chinese and Japanese)

I had firefox 3.6 and peraperakun worked as expected, since the
upgrade to firefox 4.0.1 peraperakun doesn't work even if I installed
the lastest versions. I can put the button in the top bar, but when I
click it nothing happens (I guess I should see the language flags, but
it's not the case).

If I can give you more information or details about my setup please
tell me.

thank you very much for the excellent program and keep the good work

Drake Coldwinter

[Drake Coldwinter Torregrosa]

This is very curious... If I click "View Add-On Bar" then I get a
bottom bar(like in firefox 3.6) with peraperakun star in the bottom
right corner, then peraperakun works, in the bottom bar but as well in
the top bar (the button I added with customize).

This behavior is constant, if I hide the add-on bar then I can't
change anymore the language. if I did choose Japanese, then it stays
in Japanese, but the button in the top bar doesn't work anymore.

Drake Coldwinter