I've been trying to open the UI but it doesn't open. The device is shown but double clicking it, nothing happens. I've attached a Phidget Motor Controller and a Servo Motor to it. How would it work now?
Solution: uninstall the software and re-install it, BUT when you do the installation do not change the default folder path of installation (C:\Program File\Phidgets).
In my opinion this is the easiest way to solve that problem.
P.S.: In my case i was trying to install the software in another partition in my HD (e.g. D:\)