Can't add CC121 as a device

When using Device Setup (F4) and selecting CC121 from the drop down list, nothing happens.

Seems to be working now. I had tried to connect the CC121 via a USB hub and Windows bluescreened shortly thereafter. Connected via a dedicated port and now it works fine.

I have been using CC121 for years and with a lot of different pc setups…tonight i tryied installing it to a new pc and i have the exact same problem…although i have installed the drivers many times and connected stright to the pc usb ports nothing happens…any other ideas?