Problem is, I did use pngquant.
Here's some screenshots with the settings I used:
http://i.imgur.com/adnraz1.png
http://i.imgur.com/No079H8.png
http://i.imgur.com/BaL5HMZ.png
Here's my icon:
http://i.imgur.com/dNzVKVU.png
The worst part is, I've gotten this to work with another image using the same settings.
Here's that other image that I got working:
http://i.imgur.com/2dczEvp.png
Both images were made in Microsoft Paint.
Any help is greatly appreciated.
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