Lost all inventory, armor, and edited skin (although my current skin was eventually restored).

Put the summary of the bug you're having here

What I expected to happen was...:
Normal game of Minecraft with new and extra features (and less bugs)

What actually happened was...:
I lost all inventory and my edited skin (although that was sometimes restored) leaving only my placed sandblocks.

Steps to Reproduce:
1. Play Minecraft 14w30c.
2. Optionally 'Start LAN World' and select 'Save and Quit to Title'.
3. Finally, restart world to find all inventory, armor, and current skin (if any) to be lost (skin eventually restored if applicable).