Minecraft Forums

---- Minecraft Crash Report ----
// My bad.

Time: 2/19/13 7:45 PM
Description: Exception in server tick loop

java.lang.ClassCastException: aok cannot be cast to akq
at akr.<init>(SourceFile:33)
at akq.a(SourceFile:372)
at akq.a(SourceFile:334)
at abm.a(SourceFile:394)
at zq.e(SourceFile:301)
at agm.a(SourceFile:384)
at agm.a(SourceFile:513)
at aed.a(SourceFile:393)
at ago.a(SourceFile:29)
at agi.a(SourceFile:73)
at aco.a(SourceFile:422)
at iw.a(SourceFile:165)
at abm.a(SourceFile:715)
at iw.c(SourceFile:104)
at iv.<init>(SourceFile:26)
at iu.a(SourceFile:172)
at iu.a(SourceFile:203)
at gs.a(SourceFile:133)
at gs.c(SourceFile:176)
at gs.a(SourceFile:88)
at bgq.b(SourceFile:73)
at net.minecraft.server.MinecraftServer.r(SourceFile:480)
at net.minecraft.server.MinecraftServer.q(SourceFile:397)
at bgp.q(SourceFile:122)
at net.minecraft.server.MinecraftServer.run(SourceFile:331)
at gn.run(SourceFile:573)


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

-- System Details --
Details:
Minecraft Version: 13w07a
Operating System: Mac OS X (x86_64) version 10.5.8
Java Version: 1.6.0_26, Apple Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
Memory: 382550656 bytes (364 MB) / 554369024 bytes (528 MB) up to 1069416448 bytes (1019 MB)
JVM Flags: 3 total; -Xbootclasspath/a:/System/Library/PrivateFrameworks/JavaApplicationLauncher.framework/Resources/LauncherSupport.jar -Xms512M -Xmx1024M
AABB Pool Size: 2669 (149464 bytes; 0 MB) allocated, 2653 (148568 bytes; 0 MB) used
Suspicious classes: $Proxy3, $Proxy4]
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
Profiler Position: N/A (disabled)
Vec3 Pool Size: 330 (18480 bytes; 0 MB) allocated, 330 (18480 bytes; 0 MB) used
Player Count: 1 / 8; [ja['TheSchnitz23'/2119, l='Steven', x=-361.33, y=36.00, z=-498.29]]
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.





This Crash keeps happening to me, Any help will be appreciated. (:

Also make sure that you are not using a world that ever had any mods used on it.
But more likely is just a bug.