But...yes...there is a but, But when you click on the "Save Icon Order" the icons you tried to add will automatically disappear. So right now I'm deleting several instances of a Facebook Fan Page and a Multiply page (yes my client still uses Multiply LOL)
Just a heads up for those experience the same problem. This workaround might work for you or it might not. It worked for me, and I think one other guy. It's a little inconvenient so hopefully the plugin author will work on this on the next release.