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Disable "Threaded Optimization" / "OpenGL Threading" in the graphics card control panel (example).
How to make it for ATI RADEON?

I've never had a bad experience with Optifine until now. I don't know if it was Optifine that messed with my game, the Java platform I downloaded, or if it was the Magic Launcher.

Regardless of what it was, it now takes incredibly long for the chunks around my starting position to load up, while playing I get terrible lag spikes, and my sounds no longer work.

I've used Optifine in the past without any of these issues, so I'm really dissapointed. Can someone direct me to which one of the three things I downloaded could be the potential problem?

Ok, bumping my post from yesterday with new information...
Switching Java from OpenJDK to Sun Java did not work. Changing out my graphics drivers to both newer and older versions did not work. Last resort was creating a "clean" profile in MagicLauncher and starting the game. This fixed the glitch. Quit out, add OptiFine (ONLY) back in, glitched again.
This seems to confirm that the glitch is OptiFine related. Any support/suggestions?

(Specs and such are a few pages back, for reference)

Edit:
Ok, so swapping out 1.2.5_HD_S_C6/1.2.5_HD_MT_C6/1.2.5_HD_U_C7 with 1.2.5_HD_C6 seems to have fixed the issue. What is it about S/MT/U that causes this glitch?

I installed the Optifine mod but whenever the Mojang logo is done showing, it just gives me blackscreen. I didn't install the HD Texture thing in it.

Quote from bloxxor1337

I installed the Optifine mod but whenever the Mojang logo is done showing, it just gives me blackscreen. I didn't install the HD Texture thing in it.

Same thing happens to me.

With Ultra 1.3.1 installed by itself, my world will not load. I've tried turning on and off both multicore and AA. The crash report is below.

EDIT: I've tried Too Many Items by itself and I get the same crash. Am I missing somthing important? I've never had any problems with either of these mods.



Minecraft has crashed!
----------------------
Minecraft has stopped running because it encountered a problem; Unexpected error
This error has been saved to C:\Users\Matt\AppData\Roaming\.minecraft\crash-reports\crash-2012-08-12_11.57.55-client.txt for your convenience. Please include a copy of this file if you report this crash to anyone.

--- BEGIN ERROR REPORT 34f2d536 --------
Generated 8/12/12 11:57 AM
- Minecraft Version: 1.3.1
- Operating System: Windows 7 (amd64) version 6.1
- Java Version: 1.7.0_05, Oracle Corporation
- Java VM Version: Java HotSpot™ 64-Bit Server VM (mixed mode), Oracle Corporation
- Memory: 384135280 bytes (366 MB) / 514523136 bytes (490 MB) up to 954466304 bytes (910 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- LWJGL: 2.4.2
- OpenGL: ATI Radeon HD 5700 Series GL version 4.2.11631 Compatibility Profile Context, ATI Technologies Inc.
- Is Modded: Probably not
- Type: Client
- Texture Pack: Herr Sommer 1.3.1.zip
- Profiler Position: N/A (disabled)
- World MpServer Entities: 1 total; [atf['Barujin'/94, l='MpServer', x=8.50, y=66.62, z=8.50]]
- World MpServer Players: 1 total; [atf['Barujin'/94, l='MpServer', x=8.50, y=66.62, z=8.50]]
- World MpServer Chunk Stats: MultiplayerChunkCache: 0
- Forced Entities: 0 total; []
- Retry Entities: 0 total; []
java.lang.NoClassDefFoundError: aux
at auw.<init>(SourceFile:16)
at ave.a(RenderEngine.java:902)
at ava.a(RenderGlobal.java:2130)
at uo.a(SourceFile:757)
at atc.a(SourceFile:128)
at uo.d(SourceFile:749)
at atc.d(SourceFile:110)
at net.minecraft.client.Minecraft.a(SourceFile:1388)
at net.minecraft.client.Minecraft.a(SourceFile:1336)
at asu.a(SourceFile:133)
at cs.a(SourceFile:71)
at ba.b(SourceFile:51)
at net.minecraft.client.Minecraft.l(SourceFile:1269)
at net.minecraft.client.Minecraft.J(SourceFile:583)
at net.minecraft.client.Minecraft.run(SourceFile:535)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: aux
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)
... 16 more
--- END ERROR REPORT a69e0e55 ----------

Quote from bloxxor1337

I installed the Optifine mod but whenever the Mojang logo is done showing, it just gives me blackscreen. I didn't install the HD Texture thing in it.

Quote from Iveyron

Same thing happens to me.

Error logs or it didn't happen. (It's doubtful anyone can help you without error logs.)
Place it in spoilers.

[spoiler]...your error...[/spoiler]

Quote from Barujin

With Ultra 1.3.1 installed by itself, my world will not load. I've tried turning on and off both multicore and AA. Here is the crash report:

Minecraft has crashed!
----------------------
Minecraft has stopped running because it encountered a problem; Unexpected error
This error has been saved to C:\Users\Matt\AppData\Roaming\.minecraft\crash-reports\crash-2012-08-12_11.57.55-client.txt for your convenience. Please include a copy of this file if you report this crash to anyone.

--- BEGIN ERROR REPORT 34f2d536 --------
Generated 8/12/12 11:57 AM
- Minecraft Version: 1.3.1
- Operating System: Windows 7 (amd64) version 6.1
- Java Version: 1.7.0_05, Oracle Corporation
- Java VM Version: Java HotSpot™ 64-Bit Server VM (mixed mode), Oracle Corporation
- Memory: 384135280 bytes (366 MB) / 514523136 bytes (490 MB) up to 954466304 bytes (910 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- LWJGL: 2.4.2
- OpenGL: ATI Radeon HD 5700 Series GL version 4.2.11631 Compatibility Profile Context, ATI Technologies Inc.
- Is Modded: Probably not
- Type: Client
- Texture Pack: Herr Sommer 1.3.1.zip
- Profiler Position: N/A (disabled)
- World MpServer Entities: 1 total; [atf['Barujin'/94, l='MpServer', x=8.50, y=66.62, z=8.50]]
- World MpServer Players: 1 total; [atf['Barujin'/94, l='MpServer', x=8.50, y=66.62, z=8.50]]
- World MpServer Chunk Stats: MultiplayerChunkCache: 0
- Forced Entities: 0 total; []
- Retry Entities: 0 total; []
java.lang.NoClassDefFoundError: aux
at auw.<init>(SourceFile:16)
at ave.a(RenderEngine.java:902)
at ava.a(RenderGlobal.java:2130)
at uo.a(SourceFile:757)
at atc.a(SourceFile:128)
at uo.d(SourceFile:749)
at atc.d(SourceFile:110)
at net.minecraft.client.Minecraft.a(SourceFile:1388)
at net.minecraft.client.Minecraft.a(SourceFile:1336)
at asu.a(SourceFile:133)
at cs.a(SourceFile:71)
at ba.b(SourceFile:51)
at net.minecraft.client.Minecraft.l(SourceFile:1269)
at net.minecraft.client.Minecraft.J(SourceFile:583)
at net.minecraft.client.Minecraft.run(SourceFile:535)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: aux
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)
... 16 more
--- END ERROR REPORT a69e0e55 ----------

Dunno what aux.class does, but it looks like it can't find it and it's part of the vanilla minecraft.jar.
I would start again with a freshly downloaded minecraft.jar


Also please place logs in spoilers.

[spoiler]...your error...[/spoiler]

I am seriously confused, I have installed Optifine soooo many times. But for some reason with this release, everytime i try to install it, it just black screens while logging in. Even tried to use magiclauncher and it wont work, says its not even compatible with the minecraft.jar

I can not speak English ... (Google translator)
Can I use your mod to the Mod Pack?
Please !! Thank you for your attention!
My topic Mod Pack:
http://www.minecraftbr.com/forum/Thread-1-3-1-KsCraftz-Mod-Pack
I put the credits and official threads

There is one reason I can't use this mod. This mod causes pistons to flicker when the extend/retract, which annoys the hell out of me.

Quote from MuadDib_1

Dunno what aux.class does, but it looks like it can't find it and it's part of the vanilla minecraft.jar.
I would start again with a freshly downloaded minecraft.jar


Also please place logs in spoilers.

[spoiler]...your error...[/spoiler]

Basic Mincraft works just fine, though.

Please ignore the salad fingers video on the left. here is my question,
the lines inbetween the sand blocks above my crosshair. how do i get those to go away?

Quote from Minime93ireland

I am seriously confused, I have installed Optifine soooo many times. But for some reason with this release, everytime i try to install it, it just black screens while logging in. Even tried to use magiclauncher and it wont work, says its not even compatible with the minecraft.jar

did you delete meta inf?

Quote from Barujin

Basic Mincraft works just fine, though.

Well as an experiment I deleted aux.class from my .jar and this is what i got.

Look familiar?

Start from a fresh minecraft.jar (freshly downloaded, from Mojang)
And don't delete aux.class.

Hello all, i need some help with the latest optifine update for MC1.3.1. I installed minecraft completely fresh as to avoid any issues, but when i add the optifine mod, i get as far as the log in screen, when i hit log in the game screen goes black and that's where is ends, and i'm have to force close the game because it just stays on the black screen. has anyone have this happen to them, or know what the problem is and how to fix it? thank you in advance.

Quote from marubal21

Hello all, i need some help with the latest optifine update for MC1.3.1. I installed minecraft completely fresh as to avoid any issues, but when i add the optifine mod, i get as far as the log in screen, when i hit log in the game screen goes black and that's where is ends, and i'm have to force close the game because it just stays on the black screen. has anyone have this happen to them, or know what the problem is and how to fix it? thank you in advance.

Have you tried deleting meta-inf?

Quote from marubal21

Hello all, i need some help with the latest optifine update for MC1.3.1. I installed minecraft completely fresh as to avoid any issues, but when i add the optifine mod, i get as far as the log in screen, when i hit log in the game screen goes black and that's where is ends, and i'm have to force close the game because it just stays on the black screen. has anyone have this happen to them, or know what the problem is and how to fix it? thank you in advance.

You did not delete meta-inf. Be sure to follow the instructions EXACTLY.

I've had the same thing happen lots of times, because I was rushing and forgot to delete it. Easy fix!

Quote from BigGrayGolem

You did not delete meta-inf. Be sure to follow the instructions EXACTLY.

I've had the same thing happen lots of times, because I was rushing and forgot to delete it. Easy fix!

Thank you, i knew i was asking the right people. you were right, i skiped that step altogether.

whenever i install optifine and then modloader... connected textures doesnt work

Hey gang, I've been holding off on upgrading Minecraft to 1.3 until Opti-Fine is stabilized. I'm running MC on a Core i7, Win 64 laptop with discrete Nvidia graphics chip, and have ALWAYS had problems running it. Even with Opti-Fine set properly, the lappie runs super-hot, and Minecraft suffers a lot of freezing. I've got it tweaked just where I like it, and don't really want to mess with it.

But I do want some of the new 1.3.1 features and textures.

Reading through the posts here, it sounds like the OptiFine mod is still pretty buggy under 1.3.1, so I am wondering if I should keep waiting or not? Will I see WORSE performance under 1.3.1 (more heat, more lag, more crashes)?

Open to opinions. Thanks.