Hi Clarkus,
The reason the Wiki says older versions is because every time TP was updated it would stop working with Demulshooter, however that has changed and normally updated versions of TP don't break ability to use with Demulshooter.
I have just updated a version of TP, and the newest version is still working, so it doesn't matter if you update TP completely, it should still work for you.
Have you run Demulshooter in debug mode? this is a handy way to check that it is hooking correctly, to do this add -v to your command line or shortcut (not sure on how you do it)
Happy to help out, so if you want to PM me then you can, I don't use Aimtrak myself, I use Wiimotes which add another level of complexity to it!!!, but the theory is the same, quite often it is a simple mistake or error and a fresh pair of eyes help!!
Hopefully this doesn't sound patronising or like a lecture, and don't be afraid to ask for help, everyone does and if you look on this site and others you will find plenty examples of that.
As a side note doesn't matter where you have Demulshooter and the game, as long as you set up your system "correctly" (that is my definition of correctly -other people will have a different version of correctly) you can do it all with one version of Demulshooter (Ok technically I have 3 but that is only because 2 games on my system are a PIA and only work with a specific version of Demulshooter-that is a limitation of my old computer rather than the programme though)
Regards