Actor turns into a black square when I publish to android

Faaris

So in my game, there is an actor which is a supposed to be a pink gem (https://play.google.com/store/apps/details?id=com.AcousticGames.dodgetheblocks). When I run it on gamesalad, everything works perfectly, all the actors look perfect and everything. However, when I play the game on an android device (only platform it is published on), those gems suddenly just become black squares, why is this?

Thanks!!

Triangularity Games

It could have something to do with the image format...what size and format was the gem image?