Adding this here as a note, and to inform anyone that installed the 0.2.3. version

UPDATE:

So I had renamed a TileEntity Class file to make crash logs much easier to read. Tile entites use the class name as a sort of ID. Very strange cause I don't believe any other class do this really. I'm awaiting for a new version to tested before I push.

Previous 0.2.2 Hatchery Version worlds will be fine to update,
If you where one of the few that got 0.2.3 updated to the next version will do the same thing
That's only because I had to revert the name. That is also why I Archived the download to prevent anyone else losing a lot of hard work on chickens.

I do Apologize that this has happen, and hope you were able to salvage the worlds where you lost your chickens.

Im rewritting the code.. when I first wrote this.. there werent a lot of blocks that did this. So i sort of leaned on the fly.. lot of bad code. And I was afraid that this would happen durning an update.