Things you can try:
1)Maybe you have already done this, turn off UAC(=user account control) and install the game and freetrack.
2)try an older version of Freetrack. Freetrack_V2.1.2
3) try facetracknoir.
http://facetracknoir.sourceforge.net/home/default.htm
You can use facetracknoir also with a pointtracker plugin so it works with ir-leds instead of face regognition, just like Freetrack.
4)your game has probably also a function to enable or diable or pausing Ir-tracking ingame.Your game creates a .ini file where it stores the settings for you game.It is called something like config.ini, you can open and change it with notepad.Search in it for something like : ; 0 - not use, 1 - use if hardware exist
trackIRUse=1
In this case you see, I have track-ir enabled
5)check the key settings in freetrack at the control tab.
6)try different settings/functions at the output tab.
7)Eurotruck 2 has a demo you can download for free to try.I know for sure that it works with freetrack.If you try that game and freetrack works with it, you have probably freetrack configured right and it is probably something in your game.
I found videos on youtube of your game(dirt3) with freetrack so it should be possible to make it work.
