I have seen that often sending feedback can cause "invalid error" That force closes the game. Heres how to get round it. Step one, click ape (feedback button), type in message. Copy the text cause you will need to type again otherwise. Send message. Crash.. doh... Step two reload kaw, go straight back too feedback button. Paste prev message if you saved it. Send. Doh it crashed again. Step 3 reload kaw click on feedback and Shazam its gone to the devs. Thanks.