Faulty hit tests

1

here ive been making a little game (no way near finished) but for some reason doesnt like my hit testing half the time. It works more often at the start, but basicly ignors it all the other time. Heres the .fla, feel free to mess about with it, and if you fix it, tell me. Cheers! Btw, its on flash 8. Clik on the left grey block to generate a ball, and its ment to make a little smily face pop up when it hits the right grey block.