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I recently got a private forge server running and it keeps on crashing. I've checked and made sure that all of the mods were installed on the right minecraft version (We're running 1.7.2) and also here is the crash report:

---- Minecraft Crash Report ----
// Daisy, daisy...

Time: 7/26/14 10:40 PM
Description: Exception in server tick loop

java.lang.NoClassDefFoundError: net/minecraft/world/World$2
at net.minecraft.world.World.func_147460_e(World.java:691)
at net.minecraft.world.World.func_147459_d(World.java:626)
at net.minecraft.world.World.func_147444_c(World.java:590)
at net.minecraft.world.World.func_147465_d(World.java:456)
at net.minecraft.world.World.func_147468_f(World.java:550)
at net.minecraft.block.Block.removedByPlayer(Block.java:1331)
at net.minecraft.server.management.ItemInWorldManager.func_73079_d(ItemInWorldManager.java:243)
at net.minecraft.server.management.ItemInWorldManager.func_73084_b(ItemInWorldManager.java:274)
at net.minecraft.server.management.ItemInWorldManager.func_73074_a(ItemInWorldManager.java:151)
at net.minecraft.network.NetHandlerPlayServer.func_147345_a(NetHandlerPlayServer.java:486)
at net.minecraft.network.play.client.C07PacketPlayerDigging.func_148833_a(SourceFile:53)
at net.minecraft.network.play.client.C07PacketPlayerDigging.func_148833_a(SourceFile:8)
at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:197)
at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:644)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:326)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:531)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:414)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:670)


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

-- System Details --
Details:
Minecraft Version: 1.7.2
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_65, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 125231848 bytes (119 MB) / 207302656 bytes (197 MB) up to 259522560 bytes (247 MB)
JVM Flags: 0 total;
AABB Pool Size: 5810 (325360 bytes; 0 MB) allocated, 5810 (325360 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP v9.03 FML v7.2.217.1147 6 mods loaded, 6 mods active
mcp{9.03} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{7.2.217.1147} [Forge Mod Loader] (forge-1.7.2-10.12.2.1147-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{10.12.2.1147} [Minecraft Forge] (forge-1.7.2-10.12.2.1147-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
AS_Minions{1.9.2} [Minions] (Minions-1.7.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
cfm{3.3.2} [§6MrCrayfish's Furniture Mod] (MrCrayfishFurnitureModv3.3.2(1.7.2).jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
AS_UpdateCheck{1.1.5} [AtomicStryker Update Check Mod] (UpdateCheckerMod-1.7.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 2962 (165872 bytes; 0 MB) allocated, 1243 (69608 bytes; 0 MB) used
Player Count: 2 / 20; [EntityPlayerMP['jmspider1977'/306, l='world', x=17.12, y=74.00, z=255.85], EntityPlayerMP['dndgod336'/1433, l='world', x=15.40, y=74.00, z=252.63]]
Is Modded: Definitely; Server brand changed to 'fml,forge'
Type: Dedicated Server (map_server.txt)

Can anyone help me?