Problem with extensions in thunderbird-5.0

[Michael Cronenworth]

Joachim Backes wrote:
> I'm running F15 with thunderbird-5.0, and I'm having problems to install
> a thunderbird extension file (suffix: xpi) by the TB extension manager:
> if trying "tools->add-ons->extensions", there is no button for
> installing a xpi file.

On the add-ons page, you have to click on the tool button that is next 
to the search box at the top. There is a "Install Add-on From File..." 
option.