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My minecraft crashed after trying to make a new world. It's had no problem with anything before it crashed in-game and i couldn't play that same save file again.

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

Time: 8/17/13 4:02 PM
Description: Exception in server tick loop

java.lang.ClassCastException: net.minecraft.pathfinding.PathNavigate cannot be cast to rivvest.Revamp.pathfinding.PathNavigate
at rivvest.Revamp.EntityAIAvoidEntityRevamp.<init>(EntityAIAvoidEntityRevamp.java:56)
at rivvest.Revamp.ServerTickerRevamp.runConversions(ServerTickerRevamp.java:248)
at rivvest.Revamp.ServerTickerRevamp.onStartTickInGame(ServerTickerRevamp.java:85)
at rivvest.Revamp.ServerTickerRevamp.tickStart(ServerTickerRevamp.java:68)
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)


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

-- System Details --
Details:
Minecraft Version: 1.6.2
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_01, Oracle Corporation
Java VM Version: Java HotSpot™ 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 225599504 bytes (215 MB) / 452919296 bytes (431 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -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: 3, tallocated: 63
FML: MCP v8.04 FML v6.2.34.799 Minecraft Forge 9.10.0.799 23 mods loaded, 23 mods active
mcp{8.04} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{6.2.34.799} [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{9.10.0.799} [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CodeChickenCore{0.9.0.2} [CodeChicken Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
NotEnoughItems{1.6.0.6} [Not Enough Items] (NotEnoughItems 1.6.0.6.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
mod_bspkrsCore{v3.03(1.6.2)} [bspkrsCore] ([1.6.2]bspkrsCorev3.03.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
DamageIndicatorsMod{2.8.7.0} [Damage Indicators] (1.6.2 DamageIndicators v2.8.7.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ChickenShed{1.1.2} [Chicken Shed] ([1.5+] ChickenShed (v1.1.2).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
DC1{2.2.0.9} [DukeCore] (Dukecore v2.2.0.9.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Mini{2.2.0.8} [Mini] ([1.6.2] Mini v2.2.0.8.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
extendedWorkbench{1.1.10.1} [Extended Workbench] ([1.6.2]ExtendedWorkbench v1.1.10.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FoodEx{1.3} [FoodEx] ([1.6.2]FoodEx 1.3.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
mod_StartingInventory{ML 1.6.2.r01} [StartingInventory] ([1.6.2]StartingInventory.ML.1.6.2.r01.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
TreeCapitator{Forge 1.6.2.r01} [TreeCapitator] ([1.6.2]TreeCapitator.Forge.1.6.2.r01.Uni.CoreMod.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Backpack{1.12.13} [Backpack] (backpack-1.12.13-1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
mod_BalancedRottenFleshToLeather{1.0} [mod_BalancedRottenFleshToLeather] (Balanced Leather.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BiblioCraft{1.3.4} [BiblioCraft] (BiblioCraft[v1.3.4].zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
SKC-CraftableHorseArmor{1.0.2.1} [Craftable Horse Armor] (CraftableHorseArmor 1.0.2.1 - MC 1.6.2 - Forge (9.10.0.799).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
inventorytweaks{1.55b} [Inventory Tweaks] (InventoryTweaks-MC1.6.2-1.55b-b61.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
IronChest{5.3.1.482} [Iron Chest] (ironchest-universal-1.6.2-5.3.1.482.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
MoreFurnaces{1.3.5} [More Furnaces] (moreFurnaces-1.3.5-universal.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
mod_OreDimensoinsMod{3.1} [mod_OreDimensoinsMod] (Ore Dimensions 3.1..jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Revamp{1.2.0} [Rivvest's Enhancements to Villager and Mob Performance] (revamp-1.2.0.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'