Great! You got the "firegestures" working again.

Well, almost.
I see the same gesturefy now works in different versions of the FireFox too .

Now only one request (for now?)
So that 'd be PERFECT if I could - somehow -
- "export" the setings of gestures chosen/configured in one profile,
then transfer that to another machine / user profile / whatever,
- and import it again .

i do have a 32bit "ESR" and quantum-64bit version of FF on this machine, an quantum version on another
That one is running macos, so probably some stuff will work differently there too.
( FireIE never worked on Mac, and a FireSafari didn't exist)