Cubase studio 4

Hi everyone i have cubase studio 4 then i upgraded to cubase 6 now i want to install this to my new mac book pro that has osx 10.10.4

First i down loaded the installer for cubase 6 from the steinberg web page and the mac installed the c6 but not the c4 studio.

When i opend the C6 it didnt work properly .

How could i install C4 Studio so it can run properly?