We're unable to reproduce this behavior here so it may be an issue with how the host machine/user permisssions are configured. One possibility is file permissions.
Can you make sure you are running as administrator on the host machine. Also, you might verify that VCS profiles are correctly updating. The default location for VCS profiles is:
C:\Program Files (x86)\NaturalPoint\MotionBuilderPlugin\Profiles
Also - is the device a VCS Mini (XBox controller) or a VCS Pro?
If you arent able to resolve this send an email to firstname.lastname@example.org and we can track this down.