FYI the problem launching it from the icon ceased after your most recent update; it's all good.
As for the icon itself being a green box, is it just me experiencing this? Could it be an issue with the icon size/multiple densities (keeping the following in mind: http://developer.android.com/design/style/iconography.html
World 3, Darkness is driving me crazy. I'm hard pressed to get more than 1 star on most levels and can't progress to the next world. (That's not a complaint. I'm just pointing out that it is quite challenging, and I am quite useless