How do you fix the player dying when crossing an area that the player died in previously?

[new2...@gmail.com]

Hello,

I've completed the 11 lesson and want to thank you for putting them together.  After completing all 11 lesson, there is one problem I don't know how to fix yet and I was hoping you could assist.  When the player has 'died' in a spot, if the player crosses the same spot with a later life, the player is currently dying without being hit by a new bullet.  See my video of this behavior here:  http://www.youtube.com/watch?v=O9fQs9zSxq4

I'm assuming that the "bullet" that was responsible for hitting the player needs to be marked as not alive somehow, but I'm currently stuck on how to accomplish that.

Thanks for your help!

Total Ruby Newbie