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I Installed Jurassicraft 2.o on my Forge 1.8 the recommended one and i play on minecraft then when i do something with redstone it crashes and says:

---- Minecraft Crash Report ----
// Everything's going to plan. No, really, that was supposed to happen.

Time: 9/1/15 11:09 AM
Description: Rendering Block Entity

java.lang.NullPointerException: Rendering Block Entity
at net.minecraft.client.renderer.tileentity.TileEntityPistonRenderer.func_178461_a(SourceFile:72)
at net.minecraft.client.renderer.tileentity.TileEntityPistonRenderer.func_180535_a(SourceFile:23)
at net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_178469_a(SourceFile:114)
at net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_180546_a(SourceFile:102)
at net.minecraft.client.renderer.RenderGlobal.func_180446_a(RenderGlobal.java:655)
at net.minecraft.client.renderer.EntityRenderer.func_175068_a(EntityRenderer.java:1294)
at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1207)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1032)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1055)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:345)
at net.minecraft.client.main.Main.main(SourceFile:120)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
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.client.renderer.tileentity.TileEntityPistonRenderer.func_178461_a(SourceFile:72)
at net.minecraft.client.renderer.tileentity.TileEntityPistonRenderer.func_180535_a(SourceFile:23)

-- Block Entity Details --
Details:
Name: Piston // net.minecraft.tileentity.TileEntityPiston
Block type: ID #36 (tile.null // net.minecraft.block.BlockPistonMoving)
Block data value: 0 / 0x0 / 0b0000
Block location: World: (236,116,231), Chunk: (at 12,7,7 in 14,14; contains blocks 224,0,224 to 239,255,239), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Actual block type: ID #36 (tile.null // net.minecraft.block.BlockPistonMoving)
Actual block data value: 0 / 0x0 / 0b0000
Stacktrace:
at net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_178469_a(SourceFile:114)
at net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_180546_a(SourceFile:102)
at net.minecraft.client.renderer.RenderGlobal.func_180446_a(RenderGlobal.java:655)
at net.minecraft.client.renderer.EntityRenderer.func_175068_a(EntityRenderer.java:1294)
at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1207)

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityPlayerSP['Carnosicuria'/381, l='MpServer', x=236.58, y=111.00, z=231.22]]
Chunk stats: MultiplayerChunkCache: 286, 286
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: 256.00,64.00,172.00 - World: (256,64,172), Chunk: (at 0,4,12 in 16,10; contains blocks 256,0,160 to 271,255,175), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 21662 game time, 10830 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: 31 total; [EntityBat['Bat'/43394, l='MpServer', x=161.47, y=34.10, z=264.66], EntityBat['Bat'/43396, l='MpServer', x=166.47, y=32.06, z=262.81], EntityPlayerSP['Carnosicuria'/381, l='MpServer', x=236.58, y=111.00, z=231.22], EntityCow['Cow'/136, l='MpServer', x=201.63, y=92.00, z=257.38], EntityRabbit['Rabbit'/137, l='MpServer', x=206.19, y=80.00, z=296.47], EntityCow['Cow'/205, l='MpServer', x=284.91, y=81.00, z=213.03], EntityCow['Cow'/206, l='MpServer', x=281.44, y=82.00, z=212.91], EntityCow['Cow'/207, l='MpServer', x=275.94, y=85.00, z=213.09], EntityRabbit['Rabbit'/145, l='MpServer', x=219.63, y=79.00, z=283.28], EntityRabbit['Rabbit'/146, l='MpServer', x=220.19, y=79.00, z=278.31], EntityChicken['Chicken'/85, l='MpServer', x=159.50, y=68.00, z=158.50], EntityCow['Cow'/219, l='MpServer', x=301.06, y=80.00, z=197.94], EntityCow['Cow'/220, l='MpServer', x=288.22, y=81.00, z=214.53], EntityChicken['Chicken'/165, l='MpServer', x=249.44, y=76.00, z=189.38], EntityChicken['Chicken'/166, l='MpServer', x=240.50, y=75.00, z=178.72], EntityCow['Cow'/230, l='MpServer', x=307.94, y=79.00, z=205.50], EntityChicken['Chicken'/167, l='MpServer', x=245.50, y=79.00, z=185.50], EntityCow['Cow'/231, l='MpServer', x=306.69, y=79.00, z=205.34], EntityCow['Cow'/232, l='MpServer', x=311.75, y=74.00, z=212.31], EntityItem['item.item.egg'/169, l='MpServer', x=241.28, y=75.00, z=180.56], EntityChicken['Chicken'/170, l='MpServer', x=240.63, y=72.00, z=187.56], EntityCow['Cow'/236, l='MpServer', x=314.50, y=95.00, z=301.50], EntityChicken['Chicken'/108, l='MpServer', x=175.34, y=66.00, z=152.50], EntityBat['Bat'/38893, l='MpServer', x=216.75, y=45.53, z=261.81], EntityChicken['Chicken'/109, l='MpServer', x=162.47, y=65.00, z=152.00], EntityCow['Cow'/239, l='MpServer', x=312.16, y=99.00, z=306.13], EntityCow['Cow'/120, l='MpServer', x=177.97, y=88.00, z=254.81], EntityCow['Cow'/121, l='MpServer', x=181.22, y=88.00, z=249.16], EntityCow['Cow'/122, l='MpServer', x=184.38, y=92.00, z=259.63], EntityBat['Bat'/38907, l='MpServer', x=253.38, y=17.10, z=297.25], EntityItem['item.item.egg'/34173, l='MpServer', x=246.97, y=75.00, z=188.78]]
Retry entities: 0 total; []
Server brand: fml,forge
Server type: Integrated singleplayer server
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:351)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2502)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:367)
at net.minecraft.client.main.Main.main(SourceFile:120)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.8
Operating System: Windows 10 (x86) version 10.0
Java Version: 1.8.0_60, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 226244248 bytes (215 MB) / 492257280 bytes (469 MB) up to 523501568 bytes (499 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP v9.10 FML v8.0.99.99 Minecraft Forge 11.14.3.1450 6 mods loaded, 6 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJAAAA mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)
UCHIJAAAA FML{8.0.99.99} [Forge Mod Loader] (forge-1.8-11.14.3.1450.jar)
UCHIJAAAA Forge{11.14.3.1450} [Minecraft Forge] (forge-1.8-11.14.3.1450.jar)
UCHIJAAAA JCAnimationAPI{1.2.5} [JurassiCraft AnimationAPI] (JurassiCraft-2.0.1-PreRelease.jar)
UCHIJAAAA jurassicraft{2.0.0} [JurassiCraft] (JurassiCraft-2.0.1-PreRelease.jar)
UCHIJAAAA net/timeless/unilib{${unilib_version}} [Unilib] (JurassiCraft-2.0.1-PreRelease.jar)
Loaded coremods (and transformers):
GL info: ' Vendor: 'NVIDIA Corporation' Version: '3.3.0' Renderer: 'GeForce GT 230/PCIe/SSE2'
Launched Version: 1.8-Forge11.14.3.1450
LWJGL: 2.9.1
OpenGL: GeForce GT 230/PCIe/SSE2 GL version 3.3.0, NVIDIA Corporation
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: No
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)

What do i do its getting very annoying?.