[MC-15582] Server crashes without any plugins or modifications

Our server (no mods and no plugins! original minecraft server! no bukkit or anything like this!) crashes even if there is no player on the server. Crash Report is attached.

Linked issues

duplicates 1

MC-3583 java.lang.NullPointerException: Exception ticking world (at ml.c(SourceFile:199)) (Corrupted Nether chunks) Resolved

Attachments

crash-2013-05-12_08.59.53-server.txt

Comments 3

kumasasa 2013-05-12T13:40:23Z

Note:

Description: Exception ticking world
java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:806)
	at java.util.HashMap$KeyIterator.next(HashMap.java:841)
	at iy.c(SourceFile:198)
	at iz.b(SourceFile:122)
	at net.minecraft.server.MinecraftServer.r(SourceFile:454)

Tails 2013-05-12T13:53:57Z

Duplicate of MC-12341.

kumasasa 2013-06-13T05:45:49Z

Your Java is out of date. Please update your Java to the latest version: http://www.java.com/en/download/. Keep in mind that when using a 32-bit browser on a 64-bit OS the automatic version detection will only show the 32-bit version of Java, the 64-bit version needs to be downloaded manually: http://www.java.com/en/download/manual.jsp.