FirefoxPortableESR52.2.0 can't redirect message of console (window.dump) to a file
In the case of the launch of the portable Firefox (ESR 52.2.0) in command line mode,
it is impossible to redirect the native output of the browser console (Firefox.exe) from the launcher (FirefoxPortable.exe) by typing the following command line:
C:> E: /FirefoxPortableESR52.2.0/FirefoxPortable.exe 2&1> dump.txt