I am trying to learn layers and layer masks. I loaded an image, than control J to duplicate it. I than added a layer mask. Everything good so far. I then went to filters chose a blur. Then went to brushes with black as my foreground color, I just wanted to brush away the blur, and got an error message.
"could not use the history brush because the history state does not have a corresponding layer."
Not sure how to fix.
Mike