Crash Game crashed and now my world is gone...

[Minerbros66]

 I was playing when I clicked on the extra Armour tab to see why my tinkerers construct bag was missing it was there and when I clicked on it  my game crashed. I reloaded the mod pack only to find that my world was no longer there my save file in the folder is there but no matter what I do it will not show up in game. If anyone knows how i can return my file back so i can play that would be great!

 

 

 

Here is the crash report: http://pastebin.com/ijBDrT6w