Games : Minecraft Crash

Why is it crashing? I hava the latest forge installed.

---- Minecraft Crash Report ---- // I just don't know what went wrong :(

Time: 15-2-4 ??5:05 Description: Initializing game

java.lang.NoClassDefFoundError: net/minecraft/client/renderer/RenderBlocks at net.minecraft.client.renderer.entity.Render.(SourceFile:26) at net.minecraft.client.renderer.entity.RenderItem.(RenderItem.java:46) at net.minecraft.client.gui.achievement.GuiAchievement.(SourceFile:29) at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:469) at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:867) at net.minecraft.client.main.Main.main(SourceFile:148) 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) Caused by: java.lang.ClassNotFoundException: net.minecraft.client.renderer.RenderBlocks at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 12 more Caused by: java.lang.NoClassDefFoundError: mrtjp/relocation/BlockMotor at mrtjp.relocation.RelocationMod$.(mod.scala:25) at mrtjp.relocation.RelocationMod$.(mod.scala) at mrtjp.relocation.asm.Transformer.transform(transformer.scala:85) at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279) at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176) ... 14 more Caused by: java.lang.ClassNotFoundException: mrtjp.relocation.BlockMotor at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 19 more Caused by: java.lang.NoClassDefFoundError: mrtjp/core/block/InstancedBlock at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source) at java.security.SecureClassLoader.defineClass(Unknown Source) at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182) ... 21 more Caused by: java.lang.ClassNotFoundException: mrtjp.core.block.InstancedBlock at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:101) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 25 more

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

-- Head -- Stacktrace: at net.minecraft.client.renderer.entity.Render.(SourceFile:26) at net.minecraft.client.renderer.entity.RenderItem.(RenderItem.java:46) at net.minecraft.client.gui.achievement.GuiAchievement.(SourceFile:29) at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:469)

-- Initialization -- Details: Stacktrace: at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:867) at net.minecraft.client.main.Main.main(SourceFile:148) 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: 1.7.10 Operating System: Windows 7 (amd64) version 6.1 Java Version: 1.7.0_71, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 158495120 bytes (151 MB) / 433586176 bytes (413 MB) up to 3817865216 bytes (3641 MB) JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx4G -XX:MaxPermSize=512m AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0 FML: Launched Version: 1.7.10-Forge10.13.2.1291 LWJGL: 2.9.1 OpenGL: GeForce GT 220/PCIe/SSE2 GL version 3.3.0, NVIDIA Corporation 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: ~~ERROR~~ NullPointerException: null
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Anisotropic Filtering: Off (1)