FIX: Thunderbird - Lightning ‘New Calendar’ menu item grayed out

The fix for this is to install libstdc++5 and then reinstall Lightning. Close thunderbird and then in a terminal:

sudo apt-get remove lightning
sudo apt-get install libstdc++5
sudo apt-get install lightning

1 Response to “FIX: Thunderbird - Lightning ‘New Calendar’ menu item grayed out”


  1. 1 Richard Aug 8th, 2009 at 8:10 pm

    Thanks for this post, it really helped me.




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