Drawing with color pencils

What happened to this app? Since the current update, it will not open -- it just crashes! Please fix it. I have to give this a 1 star for now, rather than the 4 stars I would like to give it. (And please add more shades of green and shades of other common colors.)

Silver Fern 33 about Drawing for color pen, doodle, graffiti, v5.0