Its not allowing me to install on OS X 10.10.2 according to Sternberg they now support 10.10 and well I purchased and tried to install and it will not allow me to. I also have downloaded 6.5.4 but you have to install 6.5 first. what gives???
I am trying the iso disc image of 6.5.3 right now. we will see if this works.
Did you try the:
‘Steinberg Application Installer Tool for Yosemite’?
n6.5 IS on the list here: