i tried to use some extensions for thunderbird but i couldn't .
i copied the xpi file into
PortableApps\Apps\PortableThunderbird\thunderbird\extensions
the extesion appeard in the extesions menu but the program appeard
" be upgraded when Thunderbird restarted"
how i can solve this ?
Don't copy the XPI. Go into Tools - Extensions - and then click Install and find the XPI when you download it.
Remove it from the extensions directory first. You may have messed up your profile when you did it that way, so it may require a new profile.
Sometimes, the impossible can become possible, if you're awesome!
it's worked well ... thanks a lot John