So I tried to make cheats using the cheats tutorial - specifically a cheat that would give the player 1 life (whereas he starts out with 6) - but whenever I hit an enemy or fall down a pit, I get a gameover: even though the cheat is not activated.
I deleted the cheatbox from the project and the layer, and now whenever I fall down pits, I get a gameover. But only rarely when I get hit by enemies; other times, I just lose a life.
There are also times when I start up my game and the game over screen appears. I don't know what is going on, but, my game is completed and I'm not sure how to tackle this glitch.