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After loading this add-on & trying to restart, the firefox window would open although the process was running. After killing the process I had to remove in safe mode. I am running firefox 50 on linux
I can see you know your stuff. I would have kept this theme except there is way too much going on and i cannot seem to figure out how to get rid of the extra 'tool bar' if i can even do that. Absolutely love the countdown timer though!
very appropriate. I commend the developer for his/her overflowing Christmas spirit. Cheers