When I click "play", I get a BEX64 error.

OS : Win 7 64, Java : build 1.8.0_121-b13 Launcher : 2.0.806

When I click "play", there's a Java error (screen provided).
It happened right after the installation of the new launcher. I then tried with a new installation of minecraft (got rid of everything in .minecraft as well), and even reinstalled Java to no avail. I'm quite stuck.