Crashes

Put the summary of the bug you're having here

What I expected to happen was...:
My world should have opened one i clicked "play selected world".

What actually happened was...:
When i clicked "play selected world" the screen only showed the view of dirt for 15-30 seconds then the crash report came up.

Steps to Reproduce:
1. Select world i wanted to play
2. Click "play selected world"
3. Then Bam CRASH!!