I'm trying to use a simple Autohotkey script to swap the middle and right mouse buttons. I know it worked before, but now it just does nothing.

My Autohotkey hasn't changed so I'm guessing that The Witcher has? I've reinstalled it since then.

This is the entire script:
#IfWinActive ahk_class The Witcher

RButton::MButton
MButton::RButton

Try if it works without this directive "#IfWinActive", basically a simple script:

RButton::MButton
MButton::RButton

I did. It works everywhere except the game.