Thunderbird and Lightning on Mac

[opethdisciple]

We have a Mac running all the lastes versions of software etc....

It's on the domain logged in as a domain user.

Im trying to install lightning within Thunderbird.

I download it from the inbuilt add ons manager, it adds it to the list of addons, is says 'installing' but it is just sitting there at 0%

Any ideas?

Do I need to log in as doamin addming, local admin?

I thought users could install addons with out being admins?


----

Edit:

I logged in as local admin, install the lighting addon, logged back in as domain user, but addons is not in the list of installed extensions....

 

[opethdisciple]

Now I have the extension installed in thunderbird under the domain user, but, the addon is disable, it says I have to restart Thunderbird to install it, which I have obviously tried, but no joy.

I have also tried to restart the mac, and still the same.

Any ideas. (All latest software installed)