Minecraft Forums

Hey, I am having a problem. My minecraft application does not seem to work.(But I guess you already know that >.<). It crashes every time I try to create a world or play in general. I REPEATEDLY deleted and reinstalled Minecraft, but minecraft still just continues to crash before a world opens. WHY???

I am on a Mac OS X, version 10.7.5. Here is a copy of the crash report:


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

Time: 5/13/13 4:28 PM
Description: Exception in server tick loop

java.lang.NoClassDefFoundError: lt
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:295)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at sq.<init>(SourceFile:55)
at jc.<init>(SourceFile:49)
at gu.a(SourceFile:271)
at bjj.b(SourceFile:67)
at net.minecraft.server.MinecraftServer.r(SourceFile:480)
at net.minecraft.server.MinecraftServer.q(SourceFile:397)
at bjg.q(SourceFile:122)
at net.minecraft.server.MinecraftServer.run(SourceFile:331)
at gp.run(SourceFile:573)
Caused by: java.lang.ClassNotFoundException: lt
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 22 more


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

-- System Details --
Details:
Minecraft Version: 1.5.2
Operating System: Mac OS X (x86_64) version 10.7.5
Java Version: 1.6.0_37, Apple Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
Memory: 420311072 bytes (400 MB) / 581435392 bytes (554 MB) up to 1065025536 bytes (1015 MB)
JVM Flags: 3 total; -Xbootclasspath/a:/System/Library/PrivateFrameworks/JavaApplicationLauncher.framework/Resources/LauncherSupport.jar -Xms512M -Xmx1024M
AABB Pool Size: 1997 (111832 bytes; 0 MB) allocated, 1997 (111832 bytes; 0 MB) used
Suspicious classes: No suspicious classes found.
IntCache: cache: 0, tcache: 0, allocated: 1, tallocated: 63
Profiler Position: N/A (disabled)
Vec3 Pool Size: 301 (16856 bytes; 0 MB) allocated, 301 (16856 bytes; 0 MB) used
Player Count: 0 / 8; []
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.

Looks like the same crash as : https://mojang.atlassian.net/browse/MC-13257

Quote from gerbil

Looks like the same crash as : https://mojang.atlas...browse/MC-13257

They don't give a solution, though T.T

(and I reinstalled multiple times without any mods)

Quote from ultumateus

They don't give a solution, though T.T

(and I reinstalled multiple times without any mods)

What mods/addons did you have installed when this issue started happening? It might help figure out what may be causing your problem.

One potential solution is to try uninstalling java then reinstalling. Perhaps something tried to modify how Java is working.

I think i tried that death chest mod, mod loader, forge, levelup mod, and probably more. I was experimenting with the mods.