Pardon my ignorance. I am trying to install a rom (Liquid Frozen Yogurt) onto my Motorola Droid. I rebooted, came back and there is a strange symbol on the screen. It is a triangle with an exclamation mark in the middle, and it is standing upright staring down at my phone laying flat. I'm not sure if it's working away, or if this is some problem. Can someone please advise - this is my first time doing this. I have followed the instructions to the best of my abilitiy. I don't want to just try powering it off, in case it is still churning away.