Adam, I work in a MAC district and fortunately once we updated the driver we were good to go. However, the USB cable must be connected to the computer when testing. We found a few of our teachers reported this issue after we had completed the update, but it was due to not being connected to their board. I have contacts in a Windows district and heard they actually had to delete the old driver and install the new one, but I have no working knowledge of that. However, I think it would be worth a try. Hope this is helpful.
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