Yes. You must be running OS 10.8.4 to run Logic Pro XSo I need to running Mountain Lion 10.8.4
Yes. You can run Logic 9.1.x on OS 10.8.4. Yes you can have them both installed on OS 10.8.4 and run them independently. And yes, if you are running Logic 9 in OS 10.8.4 you can still launch it in 32 bit mode and run 32 bit plug-ins.Will I still be able to use logic 9 32bit and Logic 10 if I which?
Is there any interaction between them? For example, any common support files that create issues when both 9 and X are on the same partition? Any interaction between preferences? Keyboard shortcuts? Export settings? Or are they entirely unaware of each other's support files and settings? I thought I read somewhere about a concern that X would wipe 9's EXS 24 setups.Yes you can have them both installed on OS 10.8.4 and run them independently.