No Longer Able to Open World Save After Update

I updated my Minecraft last night to the latest version 1.10.1 Village & Pillage update. I played on one of my world saves for a while and saved my game. Today, I try to open my world save and get an error saying that A newer version of the game has saved this level. It cannot be loaded. Unable to connect to world.

**How can I fix this? I really don't want to lose my save game!

My version says it is version 1.10.1 which according to this website doesn't exist! (see screenshot)