Yosemite is OS X 10.10 not 10.9. As far as CS 4 there have been problems with Oracle's Java Runtime Environment. I have not tested this with Adobe CS 4 but I had similar problems with other apps. I solved my issues by installing the Java Developer Kit instead of the Java Runtime Environment. Theoretically both have the same runtime environment, but for whatever reason some applications apparently do not recognize the JRE version but work just fine with the JDK version.

If we knew what it was we were doing, it wouldn't be called research, would it?

— Albert Einstein