Not sure if it works with CS4 because as far as I know the issue has been resolved.
Anyhoo, there are a few things you can try. All the app does is to run a few lines of code in terminal so you can do it manually if you want…
Just type this:
hwprefs cpu_ht=false
and that should disable it – if you want to re-enable it then type:
hwprefs cpu_ht=true
or restart your computer.
I am also on a mac pro and it works on mine. Is it a 2009 tower? This trick only works on computers with the Nehalem architecture you see….