i haveto go for school, be back at 3:30

No you dont, you just have to change one of the to, say, "FL" or "FR"

then ive got alot to change

ModLoader.AddRecipe(new ItemStack(Fragment, 2), new Object[] { "O", Character.valueOf('O'), Block.obsidian});
ModLoader.AddRecipe(new ItemStack(Liquid, 1), new Object[] { "F", "P", Character.valueOf('F'), Fragment, Character.valueOf('P'), Item.potion, 8200});
ModLoader.AddRecipe(new ItemStack(Nether, 1), new Object[] { "B", "L", Character.valueOf('B'), Item.blazeRod, Character.valueOf('L'), Liquid});
ModLoader.AddRecipe(new ItemStack(Ooze, 1), new Object[] { "S", "N", Character.valueOf('S'), Item.spiderEye, Character.valueOf('N'), Nether});
ModLoader.AddSmelting(mod_Shadow.Ooze.shiftedIndex, new ItemStack(Shadow, 1));
ModLoader.AddRecipe(new ItemStack(Essence, 1), new Object[] { "SSS", "SSS", "SSS", Character.valueOf('S'), Shadow});
ModLoader.AddRecipe(new ItemStack(Pure, 1), new Object[] { "EEE", "EEE", "EEE", Character.valueOf('E'), Essence});
ModLoader.AddRecipe(new ItemStack(Unstable, 1), new Object[] { "M", "F", Character.valueOf('M'), Item.magmaCream, Character.valueOf('F'), Fragment});
ModLoader.AddRecipe(new ItemStack(Fear, 1), new Object[] { "F", "GU ", "SG", Character.valueOf('F'), Item.flint, Character.valueOf('G'), Item.ghastTear, Character.valueOf('U'), Unstable, Character.valueOf('S'), Item.stick});
ModLoader.AddRecipe(new ItemStack(Corrupted, 1), new Object[] { "E", "B", Character.valueOf('E'), Essence, Character.valueOf('B'), Item.blazeRod});
ModLoader.AddRecipe(new ItemStack(Fused, 1), new Object[] { "OCO", Character.valueOf('O'), Fragment, Character.valueOf('C'), Corrupted});
ModLoader.AddSmelting(mod_Shadow.Fused.shiftedIndex, new ItemStack(Refined, 1));
ModLoader.AddRecipe(new ItemStack(Dark, 1), new Object[] { "E", "P", Character.valueOf('E'), Essence, Character.valueOf('P'), Item.enderPearl});
ModLoader.AddRecipe(new ItemStack(Seeker, 1), new Object[] { " P ", " E ", " C ", Character.valueOf('P'), Pure, Character.valueOf('E'), Essence, Character.valueOf('C'), Corrupted});
ModLoader.AddRecipe(new ItemStack(Shadowsword, 1), new Object[] { "ODO", "FSB", "PRP", Character.valueOf('O'), Fragment, Character.valueOf('D'), Dark, Character.valueOf('F'), Fear, Character.valueOf('S'), Seeker, Character.valueOf('B'), Ooze, Character.valueOf('P'), Pure, Character.valueOf('R'), Refined});

ummm where?

FOUND IT you used the integer "F" twice. change one of them to something else.

cant find anything... anything here that doesnt have item. or block. is my mod item thing

ModLoader.AddRecipe(new ItemStack(Fragment, 2), new Object[] { "O", Character.valueOf('O'), Block.obsidian});
ModLoader.AddRecipe(new ItemStack(Liquid, 1), new Object[] { "F", "P", Character.valueOf('F'), Fragment, Character.valueOf('P'), Item.potion, 8200});
ModLoader.AddRecipe(new ItemStack(Nether, 1), new Object[] { "B", "L", Character.valueOf('B'), Item.blazeRod, Character.valueOf('L'), Liquid});
ModLoader.AddRecipe(new ItemStack(Ooze, 1), new Object[] { "S", "N", Character.valueOf('S'), Item.spiderEye, Character.valueOf('N'), Nether});
ModLoader.AddSmelting(mod_Shadow.Ooze.shiftedIndex, new ItemStack(Shadow, 1));
ModLoader.AddRecipe(new ItemStack(Essence, 1), new Object[] { "SSS", "SSS", "SSS", Character.valueOf('S'), Shadow});
ModLoader.AddRecipe(new ItemStack(Pure, 1), new Object[] { "EEE", "EEE", "EEE", Character.valueOf('E'), Essence});
ModLoader.AddRecipe(new ItemStack(Unstable, 1), new Object[] { "M", "F", Character.valueOf('M'), Item.magmaCream, Character.valueOf('F'), Fragment});
ModLoader.AddRecipe(new ItemStack(Fear, 1), new Object[] { " F", "GU ", "SG", Character.valueOf('F'), Item.flint, Character.valueOf('G'), Item.ghastTear, Character.valueOf('U'), Unstable, Character.valueOf('S'), Item.stick});
ModLoader.AddRecipe(new ItemStack(Corrupted, 1), new Object[] { "E", "B", Character.valueOf('E'), Essence, Character.valueOf('B'), Item.blazeRod});
ModLoader.AddRecipe(new ItemStack(Fused, 1), new Object[] { "OCO", Character.valueOf('O'), Fragment, Character.valueOf('C'), Corrupted});
ModLoader.AddSmelting(mod_Shadow.Fused.shiftedIndex, new ItemStack(Refined, 1));
ModLoader.AddRecipe(new ItemStack(Dark, 1), new Object[] { "E", "P", Character.valueOf('E'), Essence, Character.valueOf('P'), Item.enderPearl});
ModLoader.AddRecipe(new ItemStack(Seeker, 1), new Object[] { " P ", " E ", " C ", Character.valueOf('P'), Pure, Character.valueOf('E'), Essence, Character.valueOf('C'), Corrupted});
ModLoader.AddRecipe(new ItemStack(Shadowsword, 1), new Object[] { "ODO", "FSB", "PRP", Character.valueOf('O'), Fragment, Character.valueOf('D'), Dark, Character.valueOf('F'), Fear, Character.valueOf('S'), Seeker, Character.valueOf('B'), Ooze, Character.valueOf('P'), Pure, Character.valueOf('R'), Refined});

Read through your code it looks like you have tried to put a character in something you have declared as an integer.

i was trying to add a crafting recipe for the new mod

i dont know if there is just one recipe that is causing it, because minecraft coder pack recompiled it without giving any errors

Like mrstreethobo said we need more details. If you are using Eclipse it should show you an error on the line where it is . Looks like you are mixing up integers and character with how you have tried to initialise them.

@mrstreethobo
Please don't double post, just use the edit button.

maybe change the integer name and see if that works.

what exactly are you trying to do. That would help a lot.