Rated 4 out of 5 stars
I have used this add-on for a couple of years now and contrary to some reviews, it really does work - or rather it did until I updated to TB13 / Lightning 1.5. Now I find that every entry on my Lightning calendar is Duplicated - i.e. I have two copies of every event on my Lightning Calendar but not on my Google calendar. Had it not been for this bug, it would be a 5-star review...Léirmheas ar leagan níos sine den bhreiseán seo (0.13).