Comment 5 for bug 1471565

Hello,

If you are facing simillar issue on Mint 17.2 and FF 39, for me solution was to compile FF 40 from scratches. I'm not sure why but FF40 from packages was not working :(

# if you didn't compile anything before
sudo apt-get install build-essential fakeroot devscripts

sudo apt-add-repository ppa:mozillateam/firefox-next
sudo apt-get update

sudo apt-get build-dep fdupes

# unfortunately on my side FF was still asking to install gstreamer, so finally I've choose everything from gstreamer*dev in the name
sudo apt-get install libgstreamer-plugins-bad0.10-dev libgstreamer0.10-dev libgstreamer-plugins-base0.10-dev libgstreamer-plugins-base1.0-dev libgstreamer-plugins-base0.10-dev libgstreamer0.10-dev libgstreamer1.0-dev libgstreamer0.10-dev libgstreamer-plugins-bad0.10-dev libgstreamer-plugins-bad1.0-dev libgstreamer0.10-cil-dev

# make that and wait about hour ;)
sudo apt-get -b source firefox

# remember to choose correct locale
sudo dpkg --install firefox_40.0\~b3+build1-0ubuntu0.14.04.1_amd64.deb firefox-globalmenu_40.0\~b3+build1-0ubuntu0.14.04.1_amd64.deb firefox-mozsymbols_40.0\~b3+build1-0ubuntu0.14.04.1_amd64.deb firefox-locale-[YOUR_LOCALE]_40.0\~b3+build1-0ubuntu0.14.04.1_amd64.deb

I've test it on two different PCs with Mint 17.2 and crash issue gone.

Regards