They will not open because there black and white two channel saved as the wrong format. You could convert them to gif but hey don't worry about those ones. I bet if you play with the alpha channel you'll goof it up. There sensitive. There is no room for error on those beacue of the mask part. I was thinking though if they used 255 black for the mask you should beable to use 254 or 253 white for the leaf part. Oh learned the hard way. When making a alpha for a program make it two channel black and white then make it 8 bit color again and save. Everything will be able to open it then. It still will only have two colors.