Sven PVC

Hello, When trying to instal Vectorworks 2012 on my Imac, I encountered a problem. The dongeldrivers can not be installed. I can complete the installation, but it gives me a message that Vectorworks can not be found. What can I do to instal Vectorworks on my Imac? At this moment Vectorworks is installed on my windows 7 computer and it works verry well, but I want to install it on my new mac. Can someone help me? Thanks!