Sticky Keys doesn't work very well with some combinations. For example Alt-click required to access the "good" trees. I bought a bunch of Scott Tucker's trees and you have to use Alt-click to on the Tree icon to find them on your hard drive and load them into your scene. Because Sticky Keys doesn't allow me to do that, I had my brother load each tree for me and then I saved the scene. So now I have files such as willow.br5, etc.