I found a workaround to the problem. Just turn on the camera pressing more than one second the ON/OFF button.
If I turn on the camera pressing the play button or the ON/OFF button less tan one second (leading the camera to boot on play mode) it loads CHDK and shows the error (I was turning on the camera on that way all this time) but if I turn on the camera pressing more than one second the ON/OFF button (leading the camera to boot on "shooting" mode), it boots CHDK without errors, weird
