I keep getting this error when making a recipe for my cake and my chocolate bar when i wanna make my crafting recipe(for the cake) and a smelting recipe(for my chocolate bar) im on the latest mcp and forge but still get the problem :'(

The way you get Cocoa Beans is:

 

new ItemStack(Item.dyePowder, 1, 3)

it doesn't work for me both crafting and smeling crash my game :'(

Crashes in recipes usually occur, when You have a typo in pattern, when You have a pattern wider or narrower than 3.

Test, if it's only cocoa beans, or any other item, that causes the crash.

 

But thats just my first, wild guess. Posting Your crash log or (the logic or, which means or/and) code would help.