Affects Version/s: Minecraft 1.7.4
Fix Version/s: None
Environment:Operating System: Mac OS X (x86_64) version 10.9.1
Java Version: 1.6.0_65, Apple Inc.
Put the summary of the bug you're having here
What I expected to happen was...:
I expected the level to open and work as normal. I had been working on an extensive map with command blocks.
What actually happened was...:
The game will open fine, and opens other levels fine, but this level produces an immediate crash.
Steps to Reproduce:
1. Open the level file.
3. ...Crash report.