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---- Minecraft Crash Report ----
// Quite honestly, I wouldn't worry myself about that.

Time: 7/5/13 4:46 PM
Description: Exception in server tick loop

java.lang.NoClassDefFoundError: net/minecraft/entity/ai/EntityAIMoveTwardsRestriction
at rivvest.Revamp.ServerTickerRevamp.runConversions(ServerTickerRevamp.java:222)
at rivvest.Revamp.ServerTickerRevamp.onStartTickInGame(ServerTickerRevamp.java:80)
at rivvest.Revamp.ServerTickerRevamp.tickStart(ServerTickerRevamp.java:63)
at cpw.mods.fml.common.SingleIntervalHandler.tickStart(SingleIntervalHandler.java:28)
at cpw.mods.fml.common.FMLCommonHandler.tickStart(FMLCommonHandler.java:122)
at cpw.mods.fml.common.FMLCommonHandler.onPreServerTick(FMLCommonHandler.java:287)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:574)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:129)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:482)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:582)
Caused by: java.lang.ClassNotFoundException: net.minecraft.entity.ai.EntityAIMoveTwardsRestriction
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:179)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 10 more
Caused by: java.lang.NullPointerException


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

-- System Details --
Details:
Minecraft Version: 1.6.1
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_17, Oracle Corporation
Java VM Version: Java HotSpot™ 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 108687664 bytes (103 MB) / 418775040 bytes (399 MB) up to 954466304 bytes (910 MB)
JVM Flags: 1 total; -Xmx1G
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 1, tallocated: 63
FML: MCP v8.03 FML v6.1.34.771 Minecraft Forge 8.9.0.771 6 mods loaded, 6 mods active
mcp{7.51} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{6.1.34.771} [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{8.9.0.771} [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
DamageIndicatorsMod{2.8.2.0} [Damage Indicators] (1.6.1 DamageIndicators v2.8.2.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
IGML3{2.0.0.3} [In Game Mod List 3] ([1.6.1] IGML3 v2.0.0.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Revamp{1.1.1} [Rivvest's Enhancements to Villager and Mob Performance] (revamp-1.1.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Player Count: 0 / 8; []
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'