Hi,
I am using zbrush 4r4. I import a texture and select mask by color - mask by intensity but it did not work. The result is either a full black mask or no mask.
What did i missed?
The update to ZB4R6 P2
There really is no exscuse to not update your copy of Zbrush. It only takes a few minutes and is a free upgrade. Your projects should load just fine in the latest version.
I didn’t update but i manage to solve it.
I selected the wrong texture panel. I should select to import my texture in the right texture panel and then select by intensity. it works 
The only reason I can think of you don’t want to or can’t update is you’re still on Win XP. You should update. Stuff was fixed(hence updated software) Better is always good 