Minecraft Forums

Hello guys, I need some help. I updated to Minecraft 1.4.6 when it came out, and everything was fine. I played the game on full screen and got my usual 90-110 fps on far render distance. Then, I didn't play the game for about 5 days, because I got tired of it. I came back to it yesterday for something to do, I open it up, and play on full screen, and I'm getting 20 fps max. Then, I restart the client to try to fix it, and I get constant crashes when logging into any world or server. I finally manage to get back on one time, and none of the world loads its textures, so I just see floating mobs in caves below me. I change all of my settings around (I have Optifine latest version), and still nothing changed, a steady 20 fps. I even completely uninstalled Minecraft, and Optifine, and I;m still having the problem. Absolutely nothing changed over these 5 days of not playing. I don't understand what the problem is, and if you could help me, I would be very grateful. Below is a crash report. In my analysis, it looks like it is Optifine, but why could I use a client, then come back to it later and have a problem when nothing at all has changed?


---- Minecraft Crash Report ----
// This doesn't make any sense!

Time: 1/7/13 5:53 PM
Description: Unexpected error

java.lang.NoClassDefFoundError: WrUpdateThread
at WrUpdaterThreaded.createUpdateThread(WrUpdaterThreaded.java:59)
at WrUpdaterThreaded.delayedInit(WrUpdaterThreaded.java:40)
at WrUpdaterThreaded.updateRenderers(WrUpdaterThreaded.java:171)
at WrUpdates.updateRenderers(WrUpdates.java:66)
at bav.a(RenderGlobal.java:1547)
at ban.a(EntityRenderer.java:1552)
at ban.b(EntityRenderer.java:1116)
at EntityRendererProxy.b(EntityRendererProxy.java:20)
at net.minecraft.client.Minecraft.J(SourceFile:605)
at net.minecraft.client.Minecraft.run(SourceFile:534)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: WrUpdateThread
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)
... 11 more


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

-- Head --
Stacktrace:
at WrUpdaterThreaded.createUpdateThread(WrUpdaterThreaded.java:59)
at WrUpdaterThreaded.delayedInit(WrUpdaterThreaded.java:40)
at WrUpdaterThreaded.updateRenderers(WrUpdaterThreaded.java:171)
at WrUpdates.updateRenderers(WrUpdates.java:66)
at bav.a(RenderGlobal.java:1547)
at ban.a(EntityRenderer.java:1552)
at ban.b(EntityRenderer.java:1116)

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [ays['Student_Pilot'/162, l='MpServer', x=8.50, y=66.62, z=8.50]]
Chunk stats: MultiplayerChunkCache: 0
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (4,64,80), Chunk: (at 4,4,0 in 0,5; contains blocks 0,0,80 to 15,255,95), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 179313 game time, 203062 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Forced entities: 1 total; [ays['Student_Pilot'/162, l='MpServer', x=8.50, y=66.62, z=8.50]]
Retry entities: 0 total; []
Stacktrace:
at ayp.a(SourceFile:281)
at net.minecraft.client.Minecraft.b(SourceFile:1871)
at net.minecraft.client.Minecraft.run(SourceFile:548)
at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
Minecraft Version: 1.4.6
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_01, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 418933128 bytes (399 MB) / 514523136 bytes (490 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
AABB Pool Size: 3 (168 bytes; 0 MB) allocated, 3 (168 bytes; 0 MB) used
Suspicious classes: IWrUpdater, Config, WrUpdaterThreaded, ...[reifnsk.minimap.ReiMinimap, GuiScreenInterface, GuiOptionScreen, ...]
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
ModLoader: Mods loaded: 2
ModLoader 1.4.6
mod_ReiMinimap v3.2_05 [1.4.6]

LWJGL: 2.4.2
OpenGL: GeForce 9200/integrated/SSE2 GL version 3.3.0, NVIDIA Corporation
Is Modded: Very likely; Jar signature invalidated
Type: Client (map_client.txt)
Texture Pack: Faithful
Profiler Position: N/A (disabled)
Vec3 Pool Size: 22 (1232 bytes; 0 MB) allocated, 22 (1232 bytes; 0 MB) used

did you try reinstalling Java?

Quote from Mitchyc99

Hi!
This sounds a bit weird, but all I can suggest is go to your .Minecraft folder (C:\Users\YourUsername\%AppData%\Roaming\.Minecraft) and put your save files on your desktop. Then when they're saved, delete your whole .Minecraft folder. Now open the Minecraft launcher and login, and the .Minecraft folder will rebuild itself. Replace the new saves folder with the one you put on your desktop.
Hope it helped!

I did exactly that (literally exactly) and I still have the problem.

I'm also getting lower framerates and jitteryness since 1.4.6. Sometimes i will have high framerates, but the game is so jittery it is completely unplayable or giving me a headache.

EDIT: I just made a superflat world. My client reports 200FPS, but it still randomly jitters for seemingly no reason.

Quote from SeanBrockest

I'm also getting lower framerates and jitteryness since 1.4.6. Sometimes i will have high framerates, but the game is so jittery it is completely unplayable or giving me a headache.

EDIT: I just made a superflat world. My client reports 200FPS, but it still randomly jitters for seemingly no reason.

Same situation for me on superflat as well, I am told I'm getting up to 190 fps, but I'm not.