minecraft crash. help?

[James]

the code was 1/22/13 3:48 PM
Description: Exception ticking world

java.lang.IllegalStateException: TickNextTick list out of synch
at in.a(SourceFile:373)
at in.b(SourceFile:136)
at net.minecraft.server.MinecraftServer.r(SourceFile:736)
at net.minecraft.server.MinecraftServer.q(SourceFile:679)
at bdz.q(IntegratedServer.java:159)
at net.minecraft.server.MinecraftServer.run(SourceFile:613)
at fy.run(SourceFile:849)

what does it mean?

[Andriy]

you should ask mojang team. Email them, or find Notch or Jeb on Twitter