Forum:Items disappearing

I have no idea why but for some reason when ever I destroy a block with anything (hand, pickaxe, axe, etc.) the item disappears completly, I don't get anything back. For example, I noticed some pumpkins near my house so I went to go get them destroyed one didn't get anything back and that keeps happening, even with torches. I'm not sure if it's because of one of the mods, because last night I went on tekkit and in the chat it said that CraftingTableIII is ready to update. So, I have no idea what the problem is, and I would greatly appreciate any help.