Fixed up recipes and converted them so the use the new <recipeUsers> tag to help me find additional bugs with recipes. Turns out I lost the deerhat recipe.
Discovered that despite the game not throwing any errors, the game no longer correctly uses the tools system. Nothing is supposed to happen if you don't have the correct tool, but instead the game lets the thing happen even if you don't have the correct tool.
I've also gone ahead and fixed that annoying missing texture error. Turns out that particular item no longer uses the texture info contained in .xml about it.
Restored the deerhat recipe.
And I'm done. At least for today, otherwise I'll pull my hair out.
Download:
http://www.mediafire.com/download/whjbycn61r8sd7h/Stone_to_Steel_Mod(2).7z