Found problem. After the patch I was left with 2 'Stable' folders, one '/Bin/Stable' and the other in Bin/x86/stable. Run trackir in the latter and it now works. Thanks.
One other thing - I have noticed under my login name it says Junior Member, I wish!!!! More of a senior unfortunately. How do I change this? I have looked in my profile but can't see where to change it.