Not sure what's going on, but can't seem to get the Paint Tool to work. I don't use this all that much except for cropping and a little image enhancement. But now for some reason, the Paint Tool has no effect. All the other tools seem to work (i.e eraser, text, shapes, etc.), but no brush strokes appear. I've messed around with any setings I can find on it, but nothing helps. Any ideas?