Quark 10 did not start at my comp. Crashed about 10 seconds after splashscreen. Spend a lot of time to investigate (about 3 weeks), all extensions on and off. Surprise, Quark did not understand my colorprofile made by iProfiler from XRite. Switching to the default Profile from Apple, at last, Quark started. This is not good.
As professionals we want calibrated monitors, not working with the standard stuff. Do something about it please Quark.