Rated 5 out of 5 stars

All is OK
working like dream.
Thanks

Rated 5 out of 5 stars

Please update Gmail Manager to
gmail_manager-0.6.4.1.4-fx+sm.xpi
to official page in addons.mozila.org

I found this and update and my Gmail Manager working.
Thanks people.

Link:
https://github.com/downloads/athomas/mozilla-firefox-addons/gmail_manager-0.6.4.1.4-fx+sm.xpi