To Be Secure :
I thank you very much but your link does not help me to the extent I am sure that the Incompatibility comes from Firefox insofar crash occurs EVERY time I start it and only there!
To Eddy :
As you can see under my name : I am a 'Newbie'
Yet, how ironic, I am 70 years old. So I am a young / old beginner who does not know (yet) all acronyms. Also, I very kindly beg you to translate them to me, please. Thank you