Uninstall problems on Mac: files cannot be found

Screen Shot 2014-04-26 at 19.37.17.png
I have an expired version of Halion Sonic and I get a message that “some content could not be loaded.” I follow the instructions on Steinberg’s website and go to my Library/Application Support/Steinberg/Content folder…but it is empty…

Where can I find the VST sounds that the error is referring to so that I can remove these? Screenshot of error is attached.
Screen Shot 2014-04-26 at 19.37.17.png