Trying to connect my Starlight XPress (SX) filter wheel in MaximDL. The filter wheel is detected and it will rotate when I select a filter. I specify SX Wheel in the setup menu. Both main and guide cams connect fine but when it gets to the filter wheel I get the message "Unable to initialize filter wheel." I have the latest driver installed per Starlight XPress tech support. So there's some problem within MaximDL, probably something I don't have set up right. Any ideas?