I just created a new skin but whenever I try to draw something with smoke it doesn't appear. Is it something to do with the skin.ini file or is it something else?
Have a look in your skin's folder for 'cursor-smoke.png' . If it's a 1x1 transparent image, try replacing it. If it has @2x in the file name, try removing the @2x from the file name. If there isn't any in the skin's folder, perhaps you accidentally rebinded the smoke key or something