I am using Quark 10.0.2. on Mavericks 10.9.1 and am having a couple of problems. A lot of time, "undo" will not work. Sometimes it will, very sporadic. Sometimes when I quit Quark and restart it will work again, but not always. Another problem is designing advertiements for my newspaper using superscript for the dollar and cents. If I copy and paste that ad onto a different page in quark, the superscipt does not retain the its size. It goes very small.