Hey, I do not know if you have the problem fixed yet but I do know how to fix this. I know because it has happened to me. Someone probably gave you the double flower item with an ID of "175 1 7" This item crashes your minecraft account. To fix the problem do this. When it says logging in on your screen someone needs to do /clear inventory (Your Minecraft Username). Then your minecraft will crash. Open it up, join the server, and it is all good. -lpett06
