Sometimes when I'm playing my man stops and I can't do anything with my controller anymore. When I pause the game and go to the controller setup all controllers except "keyboard" and "keyboard 2" are gone.
I can alt-tab back to Windows XP and check my Gravis GamePad Pro in the Control Panel under Game Controllers and it works.
When I quit and restart NBA Live they're all there again (Gravis, Generic, HammerHead, my custom config, AfterShock, etc.).
Happened in the demo as well.