Installing the current driver for the PreSonus FaderPort will stop the motorized fader from working. There were several comments on this in the forums. I had to download the 1.2 installation package and downgrade the firmware that comes with that (version 1.3.3 of the FaderPort Firmware Updater).

As a side note, to get the device working with 64-bit Cubase 6, you’ll probably want the latest driver package. To install, make sure Cubase isn’t running and copy the FaderPort.dll from C:\Program Files (x86)\PreSonus\FaderPort\FaderPort Dll\Cubase\x64 to C:\Program Files\Steinberg\Cubase 6\Components adjusting to your local drive mappings.