The Automatic Deskew function of RTIV ver 3.X requires a black reference roller. In case you update RTIV from ver 2.X to ver 3.X and use it with KV-S6040W/KV-S6045W/KV-S2055L/KV-S2055W, it will not work properly. It is because they have a white reference roller. Please exchange a white roller for black one since it will be provided as an option.
In case you are a user of KV-SS25 or KV-SS55 or KV-SS855, we are afraid that you cannot use the Automatic Deskew with RTIV ver 3.X