Since i've installed Optifine for optimizing performance and reducing lag, my client crashes after 1 minute of playing. I'm using Optifine HD Ultra D1 for Minecraft version 1.5.1. Here's the Crash-Report:
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---- Minecraft Crash Report ----
// I'm sorry, Dave.
Time: 09.05.13 14:58
Description: Exception in server tick loop
java.lang.NoClassDefFoundError: net/minecraft/world/CallableLvl1
at net.minecraft.world.World.func_72821_m(World.java:856)
at net.minecraft.world.World.func_72898_h(World.java:783)
at net.minecraft.world.World.func_72851_f(World.java:735)
at net.minecraft.world.World.func_72832_d(World.java:567)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:278)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.scanLogs(BlockLogNatural.java:265)
at TFC.Blocks.BlockLogNatural.ProcessTree(BlockLogNatural.java:211)
at TFC.Blocks.BlockLogNatural.func_71893_a(BlockLogNatural.java:152)
at net.minecraft.item.ItemInWorldManager.func_73084_b(ItemInWorldManager.java:334)
at net.minecraft.item.ItemInWorldManager.func_73082_a(ItemInWorldManager.java:238)
at net.minecraft.network.NetServerHandler.func_72510_a(NetServerHandler.java:500)
at net.minecraft.network.packet.Packet14BlockDig.func_73279_a(SourceFile:46)
at net.minecraft.network.MemoryConnection.func_74428_b(MemoryConnection.java:89)
at net.minecraft.network.NetServerHandler.func_72570_d(NetServerHandler.java:134)
at net.minecraft.network.NetworkListenThread.func_71747_b(NetworkListenThread.java:53)
at net.minecraft.server.integrated.IntegratedServerListenThread.func_71747_b(IntegratedServerListenThread.java:109)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:674)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:570)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:171)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:468)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)
A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
Minecraft Version: 1.5.1
Operating System: Windows XP (x86) version 5.1
Java Version: 1.7.0_15, Oracle Corporation
Java VM Version: Java HotSpot Client VM (mixed mode), Oracle Corporation
Memory: 130403288 bytes (124 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 2 total; -Xmx1024M -Xms512M
AABB Pool Size: 9202 (515312 bytes; 0 MB) allocated, 5170 (289520 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 2826, allocated: 1, tallocated: 63
FML: MCP v7.44 FML v5.1.13.629 Minecraft Forge 7.7.1.629 Optifine OptiFine_1.5.1_HD_U_D1 4 mods loaded, 4 mods active
mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
TerraFirmaCraft [TerraFirmaCraft] (TFCraft-Universal-Core-B2-Build76Hotfix15.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 1246 (69776 bytes; 0 MB) allocated, 1140 (63840 bytes; 0 MB) used
Player Count: 1 / 8; [EntityPlayerMP['kalsowerus'/194, l='Survive!', x=-172.65, y=148.00, z=-11032.65]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'
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Thanks for every help