device setup Lexicon alpha cubase 6le grey blank screen

Strange issue, I have recently moved my installation of Cubase 6 LE to a macbook air from my old macbook pro. The lexicon alpha works through all programmes, but when trying to configure through device set up the screen is blank grey when I click on VST AUDIO system and get the attached blank screen. I can’t even configure in inbuilt device. Could my installation be corrupt?
Screenshot 2014-12-18 21.40.06.jpg