Final Scratch 2 timecode support was dropped at version 3.2.1, so certainly no 3.4.X versions will work. The last compatible version of Traktor 3 with the Final Scratch 2 timecode support was 3.2.0.085, so you have to use that version or below. Problem is, you're probably going to have a hard time trying to find that version, at least, ahem, legally.