My game keeps crashing when I open one specific world.All my other worlds are fine.

Put the summary of the bug you're having here

What I expected to happen was.. .:
Describe what you thought should happen here
The world should open up

What actually happened was...:
Describe what happened here
The game crashed when I opened a world

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...Find the world "Stampy's Lovely World"
3. ...Open the world