psp pinball heroes non-starter :[

Can anyone help with this problem ? i've just downloaded pinball heroes to my psp (direct and via ps3) and when i try to play it i get the message "you cannot start this software from the save data".I've tried deleting and re-installing several times and getting no further than that message ! thanks in advance for any advice.
sorry everyone i've just found out that i had'nt actually downloaded the game ,just the table data