I've been using PSE 13 for a few years now, last week the eraser stopped working when I'm erasing in a mask layer. The eraser works OK in a picture, or in a layer, but the moment I try to erase in a layer mask, it just doesn't work any more.
I didn't change settings..... Tried restore tool settings, tried a new install of PSE 13, nothing helped!
What can possibly be wrong in the program settings related to the layer mask that prefends the eraser from working??