I am missing MatCap2 for some reason. I initialized zbrush but no MatCap2 is there afterwards. Please help! I am running a zbrush on a Mac if it matters. 
That’s just how it should be. MatCap2 doesn’t display an icon. It is a special MatCap for adding additional reflective maps into the mix.
Oh, thanks! I sware…I’m never gonna understand this program fully.
the wonderful confusing world of Zbrush