Unable to change skin

After the 0.16.0 update, I accidentally clicked an image that was not a skin and it crashed my mcpe. I am unable to change my skin except in store, and every time I try, MineCraft crashes. I have a similar issue on two other android devices. I recently downloaded mcpe on one and am unable to change the skin except in store. On the third device I was able to change my skins until today whenever I accidentally deleted the mc skin folder. I went back to MineCraft and I had the Steve skin, and once again, when I attempted to change my skin with the hanger, MineCraft crashed. Please fix this bug soon, thanks.