Installing LP9 On El Capitan

I got a new macbook pro already installed with El Capitan on it, and went ahead and installed Logic 9 on it, too. When I went to open the program, it said this: "The version of Logic Pro installed on this Mac is not compatible with OS X El Capitan. Download the latest version from the Mac App Store."

Is there some way I can get pass this and open Logic 9 on El Capitan?

I really don't want to update, cause getting used to a massive GUI change will mess up my workflow, and I need to be on a schedule.