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You should be able to make a flint, bone or wooden pickaxe to mine stone.
But you can't make stone pickaxe heads with Iguana Tweaks enabled (as far as I know), so you'd have to go from bone/flint to copper parts in the smeltery. The stone parts are used to make the tinkers aluminum/brass casts...
The quest McDaisy's in the Meal Fit for a King quest page currently crashes/closes the whole Minecraft client when you try to open it.
(Running version 1.2.6)
EDIT: In the Let it Flow quest page the quest Water You Waiting For? crashes the game, too
EDIT: The quest Rolling Out the Creosote...