After working on, and saving as I worked, my first story file, I went to start a 2nd story, and then the 1st one disappeared--was nowhere when I tried to go back to it. I am working with version 1.4.2 on my Mac using OSX, and I was using Twine after downloading it on to my computer. The program Twine seems to be working fine, but my story is gone from my Twine Folder. Any help retrieving it would be hugely appreciated; this represents hours and hours of intensive, rich work. Thank you.