[MC-24598] when i make a world will always crash

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here

What actually happened was...:
Describe what happened here

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...

Related issues

duplicates

MC-10167 Failed to check session lock, aborting

Attachments

crash-2013-07-09_13.04.16-client.txt

Comments

migrated 2013-07-09T17:10:31Z

[media]

migrated 2013-07-09T18:33:12Z

Updating screen events

java.lang.RuntimeException: Failed to check session lock, aborting
	at aln.h(SourceFile:44)
	at aln.<init>(SourceFile:30)
	at alj.<init>(SourceFile:16)
	at alk.a(SourceFile:83)
	at ats.a(SourceFile:1417)
	at auy.a(SourceFile:202)
	at awb.a(SourceFile:69)
	at auy.a(SourceFile:302)
	at awb.d(SourceFile:128)
	at awb.m(SourceFile:107)
	at ats.k(SourceFile:1158)
	at ats.S(SourceFile:663)
	at ats.d(SourceFile:619)
	at net.minecraft.client.main.Main.main(SourceFile:101)

migrated 2013-07-09T18:33:41Z

Your Java version is out of date. Please update your Java to the latest version (1.7.0_25): 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.
Please report if the issue persists with the latest Java version.