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Hi there, I recently created a modded forge server using optifine and twilight forest (1.7.10). Unfortunately, whilst scrolling through to the second page of the creative menu the server crashed. Any help/advice on how to fix this would be greatly appreciated, thanks.

---- Minecraft Crash Report ----
// On the bright side, I bought you a teddy bear!

Time: 4/1/16 12:48 AM
Description: Rendering item

java.lang.NullPointerException: Rendering item
at net.minecraft.item.ItemStack.func_77960_j(ItemStack.java:217)
at net.minecraft.client.renderer.entity.RenderItem.renderItemIntoGUI(RenderItem.java:402)
at net.minecraft.client.renderer.entity.RenderItem.func_82406_b(RenderItem.java:565)
at net.minecraft.client.gui.inventory.GuiContainerCreative.func_147051_a(GuiContainerCreative.java:929)
at net.minecraft.client.gui.inventory.GuiContainerCreative.func_146976_a(GuiContainerCreative.java:760)
at net.minecraft.client.gui.inventory.GuiContainer.func_73863_a(GuiContainer.java:78)
at net.minecraft.client.renderer.InventoryEffectRenderer.func_73863_a(InventoryEffectRenderer.java:38)
at net.minecraft.client.gui.inventory.GuiContainerCreative.func_73863_a(GuiContainerCreative.java:638)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1397)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1001)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898)
at net.minecraft.client.main.Main.main(SourceFile:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)


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

-- Head --
Stacktrace:
at net.minecraft.item.ItemStack.func_77960_j(ItemStack.java:217)
at net.minecraft.client.renderer.entity.RenderItem.renderItemIntoGUI(RenderItem.java:402)

-- Item being rendered --
Details:
Item Type: null
Item Aux: ~~ERROR~~ NullPointerException: null
Item NBT: null
Item Foil: ~~ERROR~~ NullPointerException: null
Stacktrace:
at net.minecraft.client.renderer.entity.RenderItem.func_82406_b(RenderItem.java:565)
at net.minecraft.client.gui.inventory.GuiContainerCreative.func_147051_a(GuiContainerCreative.java:929)
at net.minecraft.client.gui.inventory.GuiContainerCreative.func_146976_a(GuiContainerCreative.java:760)
at net.minecraft.client.gui.inventory.GuiContainer.func_73863_a(GuiContainer.java:78)
at net.minecraft.client.renderer.InventoryEffectRenderer.func_73863_a(InventoryEffectRenderer.java:38)
at net.minecraft.client.gui.inventory.GuiContainerCreative.func_73863_a(GuiContainerCreative.java:638)

-- Screen render details --
Details:
Screen name: net.minecraft.client.gui.inventory.GuiContainerCreative
Mouse location: Scaled: (301, 11). Absolute: (603, 457)
Screen size: Scaled: (427, 240). Absolute: (854, 480). Scale factor of 2

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityClientPlayerMP['steerdavid12'/12137, l='MpServer', x=-248.56, y=104.36, z=195.98]]
Chunk stats: MultiplayerChunkCache: 440, 440
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (-225,64,266), Chunk: (at 15,4,10 in -15,16; contains blocks -240,0,256 to -225,255,271), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 90542 game time, 90542 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: 121 total; [EntityClientPlayerMP['steerdavid12'/12137, l='MpServer', x=-248.56, y=104.36, z=195.98], EntityItem['item.item.egg'/11521, l='MpServer', x=-279.28, y=70.13, z=224.03], EntitySkeleton['Skeleton'/12307, l='MpServer', x=-319.50, y=69.00, z=217.50], EntityCreeper['Creeper'/11541, l='MpServer', x=-243.50, y=24.00, z=265.50], EntityItem['item.item.egg'/11564, l='MpServer', x=-307.13, y=70.13, z=219.81], EntitySkeleton['Skeleton'/12088, l='MpServer', x=-296.16, y=26.00, z=225.50], EntityChicken['Chicken'/59, l='MpServer', x=-307.50, y=70.00, z=183.50], EntityChicken['Chicken'/60, l='MpServer', x=-305.81, y=70.00, z=183.53], EntityChicken['Chicken'/61, l='MpServer', x=-304.50, y=70.00, z=207.50], EntityChicken['Chicken'/62, l='MpServer', x=-309.53, y=70.00, z=214.41], EntityChicken['Chicken'/63, l='MpServer', x=-307.47, y=70.00, z=221.44], EntityChicken['Chicken'/64, l='MpServer', x=-306.50, y=70.00, z=211.50], EntitySkeleton['Skeleton'/12356, l='MpServer', x=-314.50, y=28.00, z=194.50], EntityZombie['Zombie'/11077, l='MpServer', x=-307.69, y=22.00, z=271.94], EntitySkeleton['Skeleton'/12357, l='MpServer', x=-310.50, y=28.00, z=192.50], EntitySkeleton['Skeleton'/12358, l='MpServer', x=-310.91, y=28.00, z=194.44], EntityChicken['Chicken'/73, l='MpServer', x=-288.59, y=70.00, z=186.47], EntityZombie['Zombie'/12106, l='MpServer', x=-198.75, y=70.00, z=210.16], EntityChicken['Chicken'/74, l='MpServer', x=-295.50, y=70.00, z=191.50], EntityChicken['Chicken'/75, l='MpServer', x=-306.56, y=71.00, z=180.59], EntityChicken['Chicken'/76, l='MpServer', x=-295.44, y=70.00, z=203.47], EntityChicken['Chicken'/77, l='MpServer', x=-287.44, y=71.00, z=170.63], EntityZombie['Zombie'/12109, l='MpServer', x=-200.50, y=70.00, z=214.50], EntityChicken['Chicken'/78, l='MpServer', x=-303.53, y=70.00, z=192.47], EntitySkeleton['Skeleton'/12366, l='MpServer', x=-170.50, y=76.00, z=156.50], EntityZombie['Zombie'/10832, l='MpServer', x=-313.50, y=29.00, z=238.50], EntitySkeleton['Skeleton'/12375, l='MpServer', x=-251.50, y=61.00, z=253.50], EntitySkeleton['Skeleton'/12376, l='MpServer', x=-249.50, y=61.00, z=252.50], EntitySkeleton['Skeleton'/12377, l='MpServer', x=-248.50, y=61.00, z=251.50], EntityZombie['Zombie'/12378, l='MpServer', x=-250.50, y=61.00, z=255.50], EntityZombie['Zombie'/12379, l='MpServer', x=-246.50, y=61.00, z=255.50], EntityZombie['Zombie'/12380, l='MpServer', x=-247.50, y=61.00, z=252.50], EntitySpider['Spider'/11613, l='MpServer', x=-303.06, y=23.00, z=257.94], EntityChicken['Chicken'/95, l='MpServer', x=-288.47, y=70.00, z=228.44], EntitySkeleton['Skeleton'/11615, l='MpServer', x=-306.50, y=23.00, z=263.50], EntityChicken['Chicken'/96, l='MpServer', x=-281.41, y=70.00, z=224.44], EntityChicken['Chicken'/97, l='MpServer', x=-275.47, y=69.00, z=230.44], EntityChicken['Chicken'/98, l='MpServer', x=-281.16, y=68.46, z=215.53], EntityZombie['Zombie'/11106, l='MpServer', x=-223.50, y=40.00, z=163.50], EntitySkeleton['Skeleton'/11618, l='MpServer', x=-305.50, y=23.00, z=260.50], EntitySkeleton['Skeleton'/11620, l='MpServer', x=-301.88, y=23.00, z=256.50], EntityChicken['Chicken'/101, l='MpServer', x=-256.53, y=68.00, z=248.19], EntityItem['item.item.egg'/7526, l='MpServer', x=-211.38, y=68.13, z=157.41], EntityZombie['Zombie'/12134, l='MpServer', x=-179.50, y=34.00, z=196.50], EntityChicken['Chicken'/102, l='MpServer', x=-266.38, y=64.00, z=261.41], EntityItem['item.item.egg'/12135, l='MpServer', x=-302.66, y=70.13, z=190.41], EntityChicken['Chicken'/103, l='MpServer', x=-237.59, y=69.00, z=260.66], EntitySheep['Sheep'/104, l='MpServer', x=-254.22, y=68.00, z=249.41], EntitySheep['Sheep'/105, l='MpServer', x=-265.88, y=68.00, z=252.09], EntityZombie['Zombie'/12138, l='MpServer', x=-254.50, y=14.00, z=134.78], EntitySheep['Sheep'/106, l='MpServer', x=-249.69, y=68.00, z=253.25], EntitySkeleton['Skeleton'/12139, l='MpServer', x=-242.72, y=13.00, z=131.69], EntityZombie['Zombie'/12140, l='MpServer', x=-262.50, y=15.00, z=129.50], EntityZombie['Zombie'/12141, l='MpServer', x=-228.50, y=22.00, z=131.50], EntityItem['item.item.arrow'/12142, l='MpServer', x=-220.69, y=69.13, z=141.28], EntityZombie['Zombie'/12143, l='MpServer', x=-288.50, y=29.00, z=135.50], EntityZombie['Zombie'/12144, l='MpServer', x=-293.09, y=28.00, z=134.53], EntitySkeleton['Skeleton'/12145, l='MpServer', x=-303.56, y=27.00, z=130.06], EntityBat['Bat'/11633, l='MpServer', x=-326.25, y=40.10, z=251.75], EntityZombie['Zombie'/12146, l='MpServer', x=-250.25, y=11.00, z=120.75], EntityBat['Bat'/11634, l='MpServer', x=-326.31, y=41.10, z=249.31], EntitySkeleton['Skeleton'/12147, l='MpServer', x=-244.50, y=13.00, z=126.50], EntitySkeleton['Skeleton'/11892, l='MpServer', x=-317.50, y=55.00, z=181.50], EntitySkeleton['Skeleton'/11381, l='MpServer', x=-275.50, y=18.00, z=223.50], EntitySkeleton['Skeleton'/12149, l='MpServer', x=-245.44, y=18.00, z=118.09], EntityBat['Bat'/12150, l='MpServer', x=-250.47, y=20.10, z=125.25], EntityChicken['Chicken'/12151, l='MpServer', x=-249.59, y=65.00, z=123.59], EntityZombie['Zombie'/12152, l='MpServer', x=-207.59, y=50.00, z=142.09], EntityBat['Bat'/10616, l='MpServer', x=-273.53, y=18.10, z=226.69], EntityHorse['Horse'/120, l='MpServer', x=-262.47, y=71.00, z=174.22], EntityHorse['Horse'/121, l='MpServer', x=-268.59, y=70.00, z=204.22], EntityCreeper['Creeper'/12155, l='MpServer', x=-229.42, y=12.00, z=127.87], EntityChicken['Chicken'/124, l='MpServer', x=-236.56, y=69.00, z=244.47], EntitySheep['Sheep'/125, l='MpServer', x=-263.13, y=69.00, z=244.06], EntityCreeper['Creeper'/11901, l='MpServer', x=-237.50, y=28.00, z=258.50], EntityZombie['Zombie'/11902, l='MpServer', x=-312.50, y=28.00, z=255.50], EntityBat['Bat'/12160, l='MpServer', x=-225.25, y=26.10, z=120.56], EntitySpider['Spider'/12162, l='MpServer', x=-223.16, y=19.00, z=124.81], EntityZombie['Zombie'/12163, l='MpServer', x=-212.31, y=16.00, z=119.69], EntityCreeper['Creeper'/12165, l='MpServer', x=-210.66, y=58.00, z=120.94], EntitySkeleton['Skeleton'/12167, l='MpServer', x=-211.31, y=88.00, z=121.25], EntityHorse['Horse'/135, l='MpServer', x=-241.72, y=75.00, z=188.00], EntityCreeper['Creeper'/12168, l='MpServer', x=-296.50, y=64.00, z=124.50], EntityChicken['Chicken'/136, l='MpServer', x=-226.53, y=69.00, z=251.53], EntityChicken['Chicken'/137, l='MpServer', x=-230.59, y=69.00, z=245.59], EntitySpider['Spider'/12170, l='MpServer', x=-197.78, y=88.00, z=124.78], EntityChicken['Chicken'/138, l='MpServer', x=-220.63, y=69.00, z=255.44], EntityChicken['Chicken'/139, l='MpServer', x=-239.41, y=69.00, z=259.47], EntityChicken['Chicken'/140, l='MpServer', x=-209.50, y=69.00, z=156.50], EntityChicken['Chicken'/142, l='MpServer', x=-209.47, y=69.00, z=152.66], EntityWitch['Witch'/11662, l='MpServer', x=-304.50, y=23.00, z=257.50], EntityItem['item.item.rottenFlesh'/10639, l='MpServer', x=-271.47, y=66.13, z=145.88], EntityChicken['Chicken'/143, l='MpServer', x=-213.41, y=68.00, z=152.59], EntitySkeleton['Skeleton'/11923, l='MpServer', x=-267.50, y=20.00, z=234.50], EntityCreeper['Creeper'/12179, l='MpServer', x=-325.59, y=65.00, z=135.00], EntityCreeper['Creeper'/11938, l='MpServer', x=-312.50, y=30.00, z=177.50], EntitySkeleton['Skeleton'/11428, l='MpServer', x=-303.50, y=23.00, z=262.50], EntitySkeleton['Skeleton'/11685, l='MpServer', x=-266.50, y=15.00, z=164.50], EntitySkeleton['Skeleton'/8371, l='MpServer', x=-307.13, y=64.00, z=262.75], EntitySkeleton['Skeleton'/10940, l='MpServer', x=-229.50, y=21.00, z=244.50], EntityItem['item.item.bone'/10690, l='MpServer', x=-192.16, y=69.13, z=144.53], EntityItem['item.item.egg'/10185, l='MpServer', x=-306.25, y=70.13, z=207.63], EntityBat['Bat'/11984, l='MpServer', x=-197.48, y=21.37, z=187.82], EntitySkeleton['Skeleton'/11730, l='MpServer', x=-170.13, y=30.00, z=178.50], EntityZombie['Zombie'/11476, l='MpServer', x=-208.03, y=15.00, z=169.31], EntitySpider['Spider'/11477, l='MpServer', x=-202.28, y=17.00, z=167.28], EntityBat['Bat'/11998, l='MpServer', x=-244.75, y=64.10, z=261.25], EntityWitch['Witch'/11744, l='MpServer', x=-259.50, y=21.00, z=253.50], EntityCreeper['Creeper'/11233, l='MpServer', x=-310.50, y=28.00, z=195.50], EntityItem['item.item.egg'/9442, l='MpServer', x=-209.38, y=69.13, z=153.56], EntityItem['item.item.egg'/11750, l='MpServer', x=-287.78, y=71.13, z=172.13], EntityItem['item.item.egg'/11238, l='MpServer', x=-230.19, y=69.13, z=247.03], EntityItem['item.item.egg'/11751, l='MpServer', x=-275.91, y=69.13, z=229.56], EntityItem['item.item.egg'/11239, l='MpServer', x=-309.69, y=70.13, z=183.16], EntityItem['item.item.egg'/11752, l='MpServer', x=-237.97, y=69.13, z=244.84], EntityBat['Bat'/12011, l='MpServer', x=-261.88, y=35.30, z=214.42], EntitySkeleton['Skeleton'/12020, l='MpServer', x=-297.50, y=17.00, z=234.50], EntitySpider['Spider'/12021, l='MpServer', x=-297.50, y=71.00, z=176.50], EntityItem['item.item.egg'/10487, l='MpServer', x=-290.16, y=70.13, z=186.38], EntityCreeper['Creeper'/10749, l='MpServer', x=-294.72, y=28.00, z=275.66], EntitySkeleton['Skeleton'/11007, l='MpServer', x=-191.50, y=20.00, z=180.50]]
Retry entities: 0 total; []
Server brand: fml,forge
Server type: Non-integrated multiplayer server
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:373)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2444)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:919)
at net.minecraft.client.main.Main.main(SourceFile:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 168589400 bytes (160 MB) / 344952832 bytes (328 MB) up to 4281597952 bytes (4083 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx4G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1558 Optifine OptiFine_1.7.10_HD_U_D3 4 mods loaded, 4 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJA mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)
UCHIJA FML{7.10.99.99} [Forge Mod Loader] (forge-1.7.10-10.13.4.1558-1.7.10.jar)
UCHIJA Forge{10.13.4.1558} [Minecraft Forge] (forge-1.7.10-10.13.4.1558-1.7.10.jar)
UCHIJA TwilightForest{2.3.7} [The Twilight Forest] (twilightforest-1.7.10-2.3.7.jar)
GL info: ' Vendor: 'Intel' Version: '3.1.0 - Build 9.17.10.4229' Renderer: 'Intel(R) HD Graphics'
Launched Version: 1.7.10-Forge10.13.4.1558-1.7.10
LWJGL: 2.9.1
OpenGL: Intel(R) HD Graphics GL version 3.1.0 - Build 9.17.10.4229, Intel
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Anisotropic Filtering: Off (1)
OptiFine Version: OptiFine_1.7.10_HD_U_D3
Render Distance Chunks: 12
Mipmaps: 0
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
OpenGlVersion: 3.1.0 - Build 9.17.10.4229
OpenGlRenderer: Intel(R) HD Graphics
OpenGlVendor: Intel
CpuCount: 2