How to see get icons to show in Candybar

If you have a .png (or any file) that you need to have transparency in (for an icon) but that won't show up in CandyBar, do this:
 
Save as either a .png or .tif or .bmp as usual (flattening the image in Photoshop will destroy the transparent alpha channel, so don't do this).
 
Now PNGCrush/PNGenie/gammaSlamma as needed and then open that file in preview.
 
Now "save as…" an .icns file. This will show up properly in CandyBar and is a true apple icon file. Map