app Not installed
 

hi all
i have samsung galaxy fit android 2.2 froyo some games like (can knockdown, shoot the birds) when i move these games to sd card and start to install it , it runs but after a few second the mesage "application can't installed" was displayed
HOW CAN I SOLVE THIS PROBLEM ? MY PHONE WAS ROOTED AND I HAVE SPACE ENOUGH TO INSTALOL THE GAMES