Z800 Head Tracking Problems In Vista

[sgall2775]

Hi my emagin z800 head tracker has stopped working in vista.
Ive never had problems before its just suddenly stopped working.
Ive tried it in my laptop which has xp and works no problem.
Vista pc ive uninstalled all drivers and cleaned registry then reinstalled drivers and labtool everything goes in ok even when i turn lab tool on it doesnt say theres a problem finding the head tracker.
When i press to enable the tracker it just doesnt work.
Looked in devicemanager doesnt seem to be anyproblems.
Anyone got any suggestions.