If I own both a HDS and a Pictor scanner, can I use the same control software?

While the software (Cine2Digits) is the same, the versions for the HDS and Pictor are not compatible. The same goes for the ActiveUSB versions and the different camera drivers.
Unless you want to uninstall C2D and ActiveUSB then reinstall appropriate versions and set-up the correct camera driver between uses, we advise to use a different workstation for each scanner.