what happened to my character?

the game is great!!! I totally love it, but one thing has been bugging me... WHERE THE HECK DID MY CHARACTER GO?!!??!! I was just playing on her and the game froze, which happens sometimes, and when I went back in it said that my character was in a newer build of the game so she couldnt be loaded. HOW THE HECK DOES THAT HAPPEN?!??!!?! I didnt even update recently or anything! please help me Terraria!

Wishing Puff about Terraria, v1.2.12785