I've been using the USB 6009 for the past few weeks and it has worked wonderfully, until about five days ago. The device will come up in the devices and interface tab of NI MAX, but it cannot be tested nor can I create tasks. Basically, it's definitely alive but won't send or receive any information. I've made sure to update all drivers (DAQmx, but not Base) over the past few days and no luck. So if anyone has any ideas that I can try out I'd be happy to hear from you.
Let's start with the stupid things.
Try a different USB plug
Reboot the computer
Try another computer