For 2 days now when I play certain levels (ex: 700, 666 and 643 a few examples) for extra boosters you get the monster error beginning, halfway or towards the end of the game. So whats up with that? Do you not want players to play??? You will lose alot of players if you get rid of this feature...because of some of your rediculous higher levels that require boosters to complete !!! Very unhappy