Yes, I have tried to touch the bananas, but they are "too high". I have tried to open the cave door. I have loaded the cannon now 4 times, and each time Jack says "that was loud, but without the desired effect". I CANNOT get Jack to aim at the bananas. Unless this is a glitch, and I doubt that to be the case, I must be missing some tiny element here. I've talked to Amanda and the ape and have done everything step by step in the walkthrough. If I can't aim at the bananas, I am stuck in the game in an endless misfiring cannon loop.