Following the directions in the first post of this topic is still the correct method for "bugs".
If you get to the third box, go ahead and create a topic in the Help fourm. The responders will either help find your error or will agree that the crash is really a bug. Don't go straight to the Mantis tracker before discussing on the forum.
A crash should never happen, whether due to user error or a bug. But of course crashes do happen because it is very difficult to predict every sort of error that a user might make.