I recently updated and experienced tons of lag I never have before on 1.3.2. I set it so my MC won't lag but then it crashed while playing. Crash Report: ---- Minecraft Crash Report ---- // Everything's going to plan. No, really, that was supposed to happen. Time: 10/25/12 5:18 PM Description: Exception in server tick loop java.lang.IllegalStateException: Entity is already tracked! at hz.a(SourceFile:67) at hz.a(SourceFile:54) at ia.a(SourceFile:24) at xe.a(SourceFile:786) at ie.a(SourceFile:553) at xe.d(SourceFile:778) at ajc.l(SourceFile:55) at ajc.b(SourceFile:35) at ie.a(SourceFile:377) at ie.b(SourceFile:129) at net.minecraft.server.MinecraftServer.r(SourceFile:717) at net.minecraft.server.MinecraftServer.q(SourceFile:661) at bcb.q(SourceFile:117) at net.minecraft.server.MinecraftServer.run(SourceFile:595) at fp.run(SourceFile:818) Relevant Details: - Minecraft Version: 1.4.2 - Operating System: Windows 7 (amd64) version 6.1 - Java Version: 1.7.0_02, Oracle Corporation - Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation - Memory: 193198064 bytes (184 MB) / 648740864 bytes (618 MB) up to 954466304 bytes (910 MB) - JVM Flags: 2 total; -Xms512m -Xmx1024m - AABB Pool Size: 10852 (607712 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used - Is Modded: Probably not - Profiler Position: N/A (disabled) - Vec3 Pool Size: 3406 (190736 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used - Player Count: 1 / 8; [ih['matjam360'/36, l='MC Survival', x=-241.30, y=66.00, z=31.53]] - World MC Survival Entities: 0 total; [] - World MC Survival Players: 0 total; [] - World MC Survival Chunk Stats: ServerChunkCache: 0 Drop: 0 - Type: Integrated Server
You Should Delete ALL of your minecraft files, and the application itself. Make sure nothing is left of it. And Then Re-Download Minecraft. It works for me. If That doesn't work, open your minecraft.jar (Use a program like WINRAR) and DELETE The META INF. folder
