Building Terrain Forever

[Tobeatic]

I was in my voltz singleplayer and it kinda glitched out and when I come back whenever I try to get in it it will say Building Terrain forever and never start, All my singleplayer worlds do this but when I make a new one it works but old ones don't, They are my favourite worlds and I put lots of time in. Please Help

[Tobeatic]

By the way here is Crash report

---- Minecraft Crash Report ----
// I let you down. Sorry

Time: 14/10/14 7:56 AM
Description: Rendering screen

java.lang.AbstractMethodError: codechicken.core.gui.GuiScrollSlot.drawSlot(IIIIIZF)V
 at codechicken.core.gui.GuiScrollSlot.drawSlots(GuiScrollSlot.java:342)
 at codechicken.core.gui.GuiScrollSlot.draw(GuiScrollSlot.java:357)
 at codechicken.core.inventory.GuiContainerWidget.func_74185_a(GuiContainerWidget.java:61)
 at net.minecraft.client.gui.inventory.GuiContainer.func_73863_a(GuiContainer.java:124)
 at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1021)
 at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:871)
 at net.minecraft.client.Minecraft.run(Minecraft.java:760)
 at java.lang.Thread.run(Unknown Source)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
 at codechicken.core.gui.GuiScrollSlot.drawSlots(GuiScrollSlot.java:342)
 at codechicken.core.gui.GuiScrollSlot.draw(GuiScrollSlot.java:357)
 at codechicken.core.inventory.GuiContainerWidget.func_74185_a(GuiContainerWidget.java:61)
 at net.minecraft.client.gui.inventory.GuiContainer.func_73863_a(GuiContainer.java:124)

-- Screen render details --
Details:
 Screen name: codechicken.nei.GuiPotionCreator
 Mouse location: Scaled: (304, 320). Absolute: (609, 65)
 Screen size: Scaled: (683, 353). Absolute: (1366, 705). Scale factor of 2

-- Affected level --
Details:
 Level name: MpServer
 All players: 1 total; [GCCorePlayerSP['survivorguy4'/196058, l='MpServer', x=-731.48, y=60.62, z=148.91]]
 Chunk stats: MultiplayerChunkCache: 441
 Level seed: 0
 Level generator: ID 00 - default, ver 1. Features enabled: false
 Level generator options:
 Level spawn location: World: (-1,64,134), Chunk: (at 15,4,6 in -1,8; contains blocks -16,0,128 to -1,255,143), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
 Level time: 2136537 game time, 274425 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: survival (ID 0). Hardcore: false. Cheats: false
 Forced entities: 56 total; [EntityCow['Cow'/212647, l='MpServer', x=-733.41, y=59.00, z=190.53], EntityChicken['Chicken'/212646, l='MpServer', x=-728.16, y=59.00, z=188.41], EntityChicken['Chicken'/212645, l='MpServer', x=-728.16, y=59.00, z=190.31], EntityBat['Bat'/249201, l='MpServer', x=-652.70, y=48.53, z=219.07], EntityChicken['Chicken'/212644, l='MpServer', x=-728.81, y=59.00, z=190.84], EntityChicken['Chicken'/212643, l='MpServer', x=-728.16, y=59.00, z=190.84], EntitySquid['Squid'/249882, l='MpServer', x=-790.97, y=61.00, z=189.50], EntitySquid['Squid'/249880, l='MpServer', x=-795.75, y=59.81, z=183.28], EntitySquid['Squid'/249879, l='MpServer', x=-678.63, y=61.28, z=161.25], EntityPig['Pig'/212655, l='MpServer', x=-731.16, y=59.00, z=189.28], EntitySquid['Squid'/249878, l='MpServer', x=-672.19, y=60.84, z=146.91], EntityPig['Pig'/212654, l='MpServer', x=-728.56, y=59.00, z=187.56], EntitySquid['Squid'/249877, l='MpServer', x=-667.16, y=60.28, z=161.94], EntityPig['Pig'/212653, l='MpServer', x=-731.28, y=59.00, z=187.78], EntitySquid['Squid'/249876, l='MpServer', x=-672.66, y=62.13, z=160.56], EntityCow['Cow'/212652, l='MpServer', x=-734.03, y=59.00, z=189.22], EntityCow['Cow'/212651, l='MpServer', x=-734.53, y=59.00, z=190.53], GCCoreEntityRocketT1['Tier 1 Rocket'/196158, l='MpServer', x=-708.50, y=85.00, z=145.50], EntityCow['Cow'/212650, l='MpServer', x=-730.19, y=59.00, z=190.53], EntityCow['Cow'/212649, l='MpServer', x=-729.03, y=59.00, z=189.44], EntityCow['Cow'/212648, l='MpServer', x=-728.47, y=59.00, z=186.34], EntitySquid['Squid'/249869, l='MpServer', x=-675.50, y=59.31, z=122.50], EntityPig['Pig'/212656, l='MpServer', x=-731.38, y=59.00, z=190.53], EntityChicken['Chicken'/212657, l='MpServer', x=-735.66, y=59.50, z=182.47], GCCorePlayerSP['survivorguy4'/196058, l='MpServer', x=-731.48, y=60.62, z=148.91], EntityMinecartChest['entity.MinecartChest.name'/212611, l='MpServer', x=-805.50, y=18.50, z=222.50], EWuSu['entity.ASParticle.name'/247662, l='MpServer', x=-692.69, y=85.50, z=85.50], EntityCow['Cow'/212617, l='MpServer', x=-774.50, y=69.00, z=191.63], EntitySquid['Squid'/243956, l='MpServer', x=-667.56, y=61.13, z=142.69], EWuSu['entity.ASParticle.name'/247804, l='MpServer', x=-716.88, y=83.50, z=124.50], EntityBat['Bat'/250019, l='MpServer', x=-660.38, y=29.45, z=93.24], EntityCow['Cow'/212638, l='MpServer', x=-748.03, y=72.00, z=225.16], EntityCow['Cow'/212632, l='MpServer', x=-761.78, y=64.00, z=219.53], EntitySquid['Squid'/247079, l='MpServer', x=-674.22, y=57.34, z=154.19], EntityTileDamagable['Turret Platform'/212706, l='MpServer', x=-735.50, y=87.00, z=179.50], EntityTileDamagable['Turret Platform'/212704, l='MpServer', x=-740.50, y=85.00, z=155.50], EntityBat['Bat'/234758, l='MpServer', x=-756.50, y=46.10, z=153.28], EntityBat['Bat'/248876, l='MpServer', x=-731.53, y=16.10, z=215.75], EntityTileDamagable['Turret Platform'/196057, l='MpServer', x=-727.50, y=87.00, z=133.50], EDaoDan['Nuclear Missile'/195926, l='MpServer', x=-714.50, y=84.00, z=103.50], EDaoDan['EMP Missile'/195927, l='MpServer', x=-714.50, y=84.00, z=106.50], EDaoDan['Contagious Missile'/195930, l='MpServer', x=-718.50, y=84.00, z=106.50], EntityBat['Bat'/251164, l='MpServer', x=-807.63, y=33.81, z=100.17], EDaoDan['Antimatter Missile'/195931, l='MpServer', x=-722.50, y=84.00, z=103.50], EDaoDan['Anti-Gravitational Missile'/195928, l='MpServer', x=-714.50, y=84.00, z=109.50], EDaoDan['Red Matter Missile'/195929, l='MpServer', x=-718.50, y=84.00, z=103.50], EDaoDan['Exothermic Missile'/195932, l='MpServer', x=-722.50, y=84.00, z=106.50], EDaoDan['Nuclear Cluster Missile'/195933, l='MpServer', x=-722.50, y=84.00, z=109.50], EntityBat['Bat'/249377, l='MpServer', x=-725.75, y=53.10, z=104.25], GCCorePlayerSP['survivorguy4'/196058, l='MpServer', x=-53.46, y=117.62, z=-7.45], EntityBat['Bat'/249390, l='MpServer', x=-664.43, y=27.83, z=97.50], EntityTileDamagable['Turret Platform'/196161, l='MpServer', x=-707.50, y=86.00, z=160.50], EntityBat['Bat'/251045, l='MpServer', x=-665.52, y=34.65, z=113.44], EntityItem['item.item.egg'/248983, l='MpServer', x=-735.81, y=59.13, z=180.44], EntityTileDamagable['Turret Platform'/212698, l='MpServer', x=-765.50, y=87.00, z=158.50], EntityItem['item.item.egg'/235775, l='MpServer', x=-729.47, y=59.13, z=189.59]]
 Retry entities: 0 total; []
Stacktrace:
 at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:441)
 at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2414)
 at net.minecraft.client.Minecraft.run(Minecraft.java:776)
 at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
 Minecraft Version: 1.5.2
 Operating System: Windows 8 (x86) version 6.2
 Java Version: 1.7.0_10, Oracle Corporation
 Java VM Version: Java HotSpot Client VM (mixed mode), Oracle Corporation
 Memory: 227139984 bytes (216 MB) / 751714304 bytes (716 MB) up to 1037959168 bytes (989 MB)
 JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1024m -XX:MaxPermSize=128m
 AABB Pool Size: 1656 (92736 bytes; 0 MB) allocated, 853 (47768 bytes; 0 MB) used
 Suspicious classes: FML and Forge are installed
 IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
 FML: MCP v7.51 FML v5.2.23.737 Minecraft Forge 7.8.1.737 49 mods loaded, 49 mods active
 mcp{7.51} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 FML{5.2.23.737} [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 Forge{7.8.1.737} [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 CodeChickenCore{0.8.7.3} [codeChicken Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 CoFHFramework{1.5.2.5} [CoFH Framework] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 ImmibisMicroblocks{55.0.7} [immibis's Microblocks] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 NotEnoughItems{1.5.2.28} [Not Enough Items] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 PowerCrystalsCore{1.1.6} [PowerCrystals Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 CoFHCore{1.5.2.5} [CoFHCore] (CoFHCore-1.5.2.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 CoFHWorld{1.5.2.5} [CoFHWorld] (CoFHCore-1.5.2.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 GalacticraftCore{0.1.36} [Galacticraft Core] (Galacticraft-1.5.2-a0.1.36.410.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 ImmibisMicroblocksInstallCheck{55.0.7} [immibis's Microblocks (Checks for incorrect installation, ignore this)] (immibis-microblocks-55.0.7.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 mod_ReiMinimap{v3.3_06 [1.5.2]} [mod_ReiMinimap] ([1.5.2]ReiMinimap_v3.3_06.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded{1.5.1R2.6.4} [MineFactory Reloaded] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 AppliedEnergistics{rv11.c} [Applied Energistics] (appeng-rv11-c.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 AtomicScience{0.6.2} [Atomic Science] (Atomic_Science_v0.6.2.117.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 ExtrabiomesXL{3.13.4} [ExtrabiomesXL] (ExtrabiomesXL-universal-1.5.2-3.13.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 ICBM|Contraption{1.2.1} [iCBM] (ICBM_Contraption_v1.2.1.172.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 ICBM|Sentry{1.2.1} [iCBM] (ICBM_Sentry_v1.2.1.172.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 ICBM|Explosion{1.2.1} [iCBM] (ICBM_Explosion_v1.2.1.172.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 ImmibisCore{55.1.6} [immibis Core] (immibis-core-55.1.6.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 inventorytweaks{1.54b} [inventory Tweaks] (InventoryTweaks-1.54b.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 Mekanism{5.5.6} [Mekanism] (Mekanism-v5.5.6.bugfix1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MekanismGenerators{5.5.6} [MekanismGenerators] (MekanismGenerators-v5.5.6.bugfix1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MekanismTools{5.5.6} [MekanismTools] (MekanismTools-v5.5.6.bugfix1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MFFS{3.1.0} [Modular Force Field System] (MFFS_v3.1.0.175.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatAppliedEnergistics{1.5.1R2.6.4} [MFR Compat: Applied Energistics] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatAtum{1.5.1R2.6.4} [MFR Compat: Atum] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatBackTools{1.5.1R2.6.4} [MFR Compat: BackTools] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatBiomesOPlenty{1.5.1R2.6.4} [MFR Compat: Biomes O' Plenty] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatChococraft{1.5.1R2.6.4} [MFR Compat: Chococraft] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatExtraBiomes{1.5.1R2.6.4} [MFR Compat: ExtraBiomes] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatForestry{1.5.1R2.6.4} [MFR Compat: Forestry] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatForestryPre{1.5.1R2.6.4} [MFR Compat: Forestry (2)] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatIC2{1.5.1R2.6.4} [MFR Compat: IC2] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatMagicalCrops{1.5.1R2.6.4} [MFR Compat: Magical Crops] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatMystcraft{1.5.1R2.6.4} [MFR Compat: Mystcraft] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatPams{1.5.1R2.6.4} [MFR Compat: Pam's Mods] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatRP2{1.5.1R2.6.4} [MFR Compat: RP2] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatSoulShards{1.5.1R2.6.4} [MFR Compat: SoulShards] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatSufficientBiomes{1.5.1R2.6.4} [MFR Compat: Sufficient Biomes] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MFReloaded|CompatThaumcraft{1.5.1R2.6.4} [MFR Compat: Thaumcraft] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatThermalExpansion{1.5.1R2.6.4} [MFR Compat: Thermal Expansion] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatTwilightForest{1.5.1R2.6.4} [MFR Compat: TwilightForest] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatVanilla{1.5.1R2.6.4} [MFR Compat: Vanilla] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 MineFactoryReloaded|CompatXyCraft{1.5.1R2.6.4} [MFR Compat: XyCraft] (MineFactoryReloaded-2.6.4-975.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 mmmPowersuits{0.7.0-534} [MachineMuse's Modular Powersuits] (ModularPowersuits-0.7.0-534.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 PowersuitAddons{0.2.3-144} [Andrew2448's Modular Powersuits Addon] (MPSA-0.2.3-144_MPS-531+.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 NEIPlugins{1.0.9.3} [NEI Plugins] (NEIPlugins-1.0.9.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available
 LWJGL: 2.9.0
 OpenGL: Intel® HD Graphics 4000 GL version 4.0.0 - Build 9.17.10.2817, Intel
 Is Modded: Definitely; Client brand changed to 'fml,forge'
 Type: Client (map_client.txt)
 Texture Pack: Default
 Profiler Position: N/A (disabled)
 Vec3 Pool Size: 3415 (191240 bytes; 0 MB) allocated, 754 (42224 bytes; 0 MB) used