There are at least two different things you can
do:
1. Copy the .info file of an existing drawer over the one you have created, i.e. if your drawer is called foo and a working drawer's icon named bar then "copy bar.info foo.info". You may have to insert the right path elements.
2. Use your favorite icon editor and change the type of your new icon back to "Drawer". Save and maybe restart WB.
