0,0,0 means there is no tint, so I don't think that is it. Try doing two things: first change the coordinates and test if you can see it anywhere. Secondly, what is the size of the picture? Thirdly, is part of the picture set to transparent?
EDIT:
Actually forget all that. You have a move command instead of a wait command. All that means is that the player can't move for 40 frames. You have to use the wait command because the wait command will make the program stop moving at that point. The way you have it, Erase Picture executes immediately afer Show Picture.