FYI. if anyone has problem the new thunderbird update 45.4.0 trying to start with Lightning calendar and gets the "Add-ons Manager" tab error message of a missing component, click the "Extensions" to left. in Lightning 'bar', select [Disable], restart thunderbird, problem solved. i do not use Lightning calender, so problem was easy to solve. if you have been using Lightning calender, problem may not occur. -- peace out. CentOS GNU/Linux 6.8 tc,hago. g . =+= Tired of having your microsoft os hacked? Change to Linux os, used by microsoft hackers. =+= in a world with out fences, who needs gates. =+= _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx https://lists.centos.org/mailman/listinfo/centos