Board Thread:Questions and Answers/@comment-174.124.251.160-20130420031207/@comment-5627887-20130519005341

The only bug I have personally encountered with minium stone's is that the output of a recipe is often invisible, so that you put it in the crafting table and it appears that it isn't a valid recipe, however if you click the output area to pick up the product, it will appear when you click. This might not fix your problems though as it sounds like your auto-crafting has stopped working for no apparent reason.