There is a new beta of the SmartNAV software available for users with unit serial numbers 16400 or higher.
Changelist :
We now prevent trackir and smartnav from trying to open the same camera at once, if both software applications are run at the same time.
Please go here and download the latest SmartNAV3 software:
http://www.naturalpoint.com/smartnav/su ... loads.html