Warning!
There is a bug going on that will eat anything you feed it! Placing things (storage chests, crafting tables, etc) directly on the ground (grass/dirt/rock) is unintended behaviour and will not save properly. This is a bug in the placement code where it's supposed to say "You can't place that there".
Please be sure to place your things on structures/floors/foundations until I can patch the problem. This bug is currently affecting both live and beta branches.
Sorry for anyone that has lost things!