Minecraft Forums

I installed SPC using the automated installer .jar and when I load a world MC crashes. The main menu shows up and stuff, but when I attempt to load a world it crashes.

---- Minecraft Crash Report ----
// I feel sad now 
Time: 3/23/13 10:16 PM
Description: Rendering screen
java.lang.IncompatibleClassChangeError: Implementing class
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at net.minecraft.server.MinecraftServer.<init>(SourceFile:96)
at bjh.<init>(SourceFile:35)
at net.minecraft.client.Minecraft.a(SourceFile:1378)
at axu.e(SourceFile:166)
at axv.a(SourceFile:218)
at axt.a(SourceFile:175)
at axu.a(SourceFile:191)
at bfr.b(SourceFile:768)
at net.minecraft.client.Minecraft.K(SourceFile:597)
at net.minecraft.client.Minecraft.run(SourceFile:526)
at java.lang.Thread.run(Unknown Source)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Stacktrace:
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at net.minecraft.server.MinecraftServer.<init>(SourceFile:96)
at bjh.<init>(SourceFile:35)
at net.minecraft.client.Minecraft.a(SourceFile:1378)
at axu.e(SourceFile:166)
at axv.a(SourceFile:218)
at axt.a(SourceFile:175)
at axu.a(SourceFile:191)
-- Screen render details --
Details:
Screen name: bkg
Mouse location: Scaled: (440, 163). Absolute: (880, 690)
Screen size: Scaled: (960, 509). Absolute: (1920, 1017). Scale factor of 2
Stacktrace:
at bfr.b(SourceFile:768)
at net.minecraft.client.Minecraft.K(SourceFile:597)
at net.minecraft.client.Minecraft.run(SourceFile:526)
at java.lang.Thread.run(Unknown Source)
-- System Details --
Details:
Minecraft Version: 1.5.1
Operating System: Windows 8 (amd64) version 6.2
Java Version: 1.7.0_13, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 475007656 bytes (453 MB) / 514523136 bytes (490 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: No suspicious classes found.
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
LWJGL: 2.4.2
OpenGL: AMD Radeon HD 7800 Series GL version 4.2.12002 Compatibility Profile Context 9.12.0.0, ATI Technologies Inc.
Is Modded: Very likely; Jar signature invalidated
Type: Client (map_client.txt)
Texture Pack: Lumino-RPG-V-1_1.zip
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

I am trying to get SPC and Optifine. That error report is from a freshly force-updated minecraft.jar with just the SPC installed. I used the auto-patcher since the forum page said that was the best way.

Quote from webrosc

what have you installed into your jar?
just spc, or anything else?

Quotey quote.

Lol I've got the same problem.

Quote from ChopMania

Lol I've got the same problem.

Lol, yeah. This thread was a reply to your thread originally but the moderator moved it to it's own thread. Apparently they might be different.

To quote webrosc,

"I have moved your post into its own thread, please do not post your own issue in someone elses thread as it may mean they do not get the help needed.
Also its likely that your problem is different even if it looks similar and thus may require a different fix

here is your own thread http://www.minecraft...g-log-included/"