Plz. visit www.virtualdj.com as DJ Freshfluke told you before. If your Full-Pro-Version is registred there, you´ll get support and help with mapping an so on
Be sure to have the newest Firmware on your VMS4. For VDJ be sure to run Firmware 3.11, with "special for Mac Firmware 3.12" it´s possible that there were bugs within using VDJ.