I was attempting to make a rube goldberg machine to enter a contest and as I was trying to build my machine the game crashed and now continues to do so every time I try to open the game. I have removed all the wireless redstone using mcedit but that doesn't seem to have worked. Here is the crash report; Minecraft has crashed! ---------------------- Minecraft has stopped running because it encountered a problem; Unexpected error A full error report has been saved to D:\Feed The Beast\Direwolf20\minecraft\crash-reports\crash-2013-02-22_23.47.33-client.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash --- BEGIN ERROR REPORT 2a3467a4 -------- Full report at: D:\Feed The Beast\Direwolf20\minecraft\crash-reports\crash-2013-02-22_23.47.33-client.txt Please show that file to Mojang, NOT just this screen! Generated 22/02/13 11:47 PM -- Head -- Stacktrace: at com.eloraam.redpower.core.ItemExtended.d(ItemExtended.java:33) at up.i(Item.java:458) at up.l(Item.java:598) at ur.r(SourceFile:334) at atr.a(GuiIngame.java:406) -- Affected level -- Details: Level name: MpServer All players: 1 total; [ays['Xandrakis'/52, l='MpServer', x=409.88, y=5.62, z=-1213.93]] Chunk stats: MultiplayerChunkCache: 441 Level seed: 0 Level generator: ID 01 - flat, ver 0. Features enabled: false Level generator options: Level spawn location: World: (402,4,-1235), Chunk: (at 2,0,13 in 25,-78; contains blocks 400,0,-1248 to 415,255,-1233), Region: (0,-3; contains chunks 0,-96 to 31,-65, blocks 0,0,-1536 to 511,255,-1025) Level time: 79034 game time, 3633 day time Level dimension: 0 Level storage version: 0x00000 - Unknown? Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false) Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false Forced entities: 4 total; [EntityCartBasic['entity.Railcraft.cart.basic.name'/17, l='MpServer', x=417.50, y=5.35, z=-1222.50], ays['Xandrakis'/52, l='MpServer', x=409.88, y=5.62, z=-1213.93], EntityCartTNT['entity.Railcraft.cart.tnt.name'/16, l='MpServer', x=411.50, y=5.35, z=-1229.50], ow['Bat'/1274, l='MpServer', x=431.35, y=4.07, z=-1230.35]] Retry entities: 0 total;  Stacktrace: at ayp.a(WorldClient.java:439) at net.minecraft.client.Minecraft.b(Minecraft.java:2401) at net.minecraft.client.Minecraft.run(Minecraft.java:794) at java.lang.Thread.run(Unknown Source) -- System Details -- Details: Minecraft Version: 1.4.7 Operating System: Windows 7 (x86) version 6.1 Java Version: 1.7.0_09, Oracle Corporation Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation Memory: 201159128 bytes (191 MB) / 603602944 bytes (575 MB) up to 1046937600 bytes (998 MB) JVM Flags: 5 total; -Xms256M -Xmx1024M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:+AggressiveOpts AABB Pool Size: 9254 (518224 bytes; 0 MB) allocated, 16 (896 bytes; 0 MB) used Suspicious classes: FML and Forge are installed IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0 FML: MCP v7.26a FML v18.104.22.1683 Minecraft Forge 22.214.171.1244 Feed The Beast Mod Pack 63 mods loaded, 63 mods active (All the mods said available but I couldn't post this thread with all the characters.) LWJGL: 2.4.2 OpenGL: AMD RADEON HD 6450 GL version 4.1.10600 Compatibility Profile Context, ATI Technologies Inc. Is Modded: Definitely; Client brand changed to 'forge,fml' Type: Client (map_client.txt) Texture Pack: Default Profiler Position: N/A (disabled) Vec3 Pool Size: 84 (4704 bytes; 0 MB) allocated, 84 (4704 bytes; 0 MB) used java.lang.IndexOutOfBoundsException at com.eloraam.redpower.core.ItemExtended.d(ItemExtended.java:33) at up.i(Item.java:458) at up.l(Item.java:598) at ur.r(SourceFile:334) at atr.a(GuiIngame.java:406) at ban.b(EntityRenderer.java:982) at net.minecraft.client.Minecraft.J(Minecraft.java:882) at net.minecraft.client.Minecraft.run(Minecraft.java:771) at java.lang.Thread.run(Unknown Source) --- END ERROR REPORT 79b2ff36 ---------- Any help would be greatly appreciated.