[17:09:02] [Server thread/FATAL] [FML]: The world state is utterly corrupted and this save is NOT loadable

There is a high probability that a mod has broken the
ID map and there is
NOTHING FML or Forge can do to recover this save.

If you changed your mods, try reverting the change
java.lang.IllegalStateException: Can't map block minecraft:bookshelf to id -1 (seen at: 0), already occupied by null, blocked false, ItemBlock false
    at cpw.mods.fml.common.registry.GameData.injectWorldIDMap(GameData.java:525) ~[GameData.class:?]
    at cpw.mods.fml.common.FMLContainer.readData(FMLContainer.java:277) [FMLContainer.class:?]
    at cpw.mods.fml.common.FMLCommonHandler.handleWorldDataLoad(FMLCommonHandler.java:403) [FMLCommonHandler.class:?]
    at net.minecraft.world.storage.SaveHandler.func_75757_d(SaveHandler.java:124) [ayq.class:?]
    at net.minecraft.world.World.<init>(World.java:220) [ahb.class:?]
    at net.minecraft.world.WorldServer.<init>(WorldServer.java:97) [mt.class:?]
    at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:62) [bsx.class:?]
    at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:92) [bsx.class:?]
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387) [MinecraftServer.class:?]
    at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [?:?]

After turning off some recipes (eg nuke, iTNT, coins), I restarted my game and got the corruption message. Is this normal? Should I just use MineTweaker to change recipes in future?

O.o whats that o.O

Hmm, I can't reproduce it on a new world... I think it might be related to this though. Turning off oregen turns off ore blocks completely:

Uh sorry. Are the ores meant to be disabled completely like that? If so, you can probably just close this issue.

yeah it is. Ores will be removed with the orgen so that they do not exsist anymore... (MFR laserdrill)

WTF, Speiger, are you drunk ? You want to remove ores with oregen ? Stop 🍻

@Carbon-Ghost thats IC2 original code! Was in every IC2 version i think it was still in the 1.6.4 version of IC2 Exp...

The config for orgen dissables not only the orgen it also prevents that the Oreblock get loaded at all. OreGen = false = You can not find any IC2 Copper Ore (example) Even not in Nei

Wait, I don't understand, do you mean the config for allowing oregen or you want to completely remove oregen from IC2 O.o ?

Oh kk, but just how you wrote it sounded like you wanted to remove completely IC2 oregen xD Hence the 🍺

@Carbon-Ghost -.- Wow i know that i explain stupid but are you that blind?

Well with -3,75 both eyes, I do have an excuse for that :P lol ( gonna admit that's kinda fucking annoying when doing parkour or anything were perception is something that kinda will save your life ) but TL;DR yup.

Well i have -4,25 or -4,75 also for both eyes... (i forget those numbers always...) Really short range. I could not even watch videos on my pc when i would not have my glasses... (Coding is also then not possible)

Lol, I can TRY to do something on my computer but then I zoom 3x more at the very least, but then I get SUPER HEADACHE OF DEATH D:

Also, off topic but I can't find NG NL Vostfr D: ( subtitled in french ) ;_;

xD Well @Carbon-Ghost xD i know that.
I have no French-Sub NGNL... But i have a Eng-Sub NGNL if you want it.

I WANT IT ( if it's subtitles :D :D :D )

Closing because no longer a bug