I’m testing the new Quarkxpress 10 on Mac Os 10.9. Somehow I’m at lost with these new features, and new problems of course. The first thing I noticed is the ‘Undo’ and ‘Redo’ is not working. Apple’s Mavericks new system also conflicts with the other softwares I’m working. Anyway, I unchecked the warning triangles in the “System preferences > Keyboard > Shortcuts. Then, restart the Quark application, and the ‘Undo’, ‘Redo’ works like a charm.