Error when entering a world

[Dwarg91]

I have just upgraded from 1.2.5 to 1.3.2 and I have been getting this error whenever I go into a world;

Spoiler

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---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 9/17/12 8:50 PM
Description: Unexpected error

java.lang.NoClassDefFoundError: aux
at avf.a(RenderEngine.java:445)
at avb.a(RenderGlobal.java:1976)
at up.a(World.java:1382)
at atd.a(WorldClient.java:174)
at up.d(World.java:1366)
at atd.d(WorldClient.java:148)
at net.minecraft.client.Minecraft.a(Minecraft.java:1970)
at net.minecraft.client.Minecraft.a(Minecraft.java:1896)
at asv.a(NetClientHandler.java:157)
at cs.a(SourceFile:71)
at ba.b(SourceFile:51)
at net.minecraft.client.Minecraft.l(Minecraft.java:1809)
at net.minecraft.client.Minecraft.J(Minecraft.java:850)
at net.minecraft.client.Minecraft.run(Minecraft.java:772)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.ClassNotFoundException: aux
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 15 more

Relevant Details:
- Minecraft Version: 1.3.2
- Operating System: Windows 7 (x86) version 6.1
- Java Version: 1.7.0_07, Oracle Corporation
- Java VM Version: Java HotSpot™ Client VM (mixed mode), Oracle Corporation
- Memory: 404999040 bytes (386 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- ModLoader: Mods loaded: 4
ModLoader 1.3.2
mod_FCBetterThanWolves 4.12
mod_ReiMinimap v3.2_05 [1.3.2]
mod_Biosphere 1.3.2

- LWJGL: 2.4.2
- OpenGL: GeForce GT 525M/PCI/SSE2 GL version 4.1.0, NVIDIA Corporation
- Is Modded: Very likely
- Type: Client
- Texture Pack: Default
- Profiler Position: N/A (disabled)
- World MpServer Entities: 1 total; [atg['Dwarg91'/283, l='MpServer', x=8.50, y=66.62, z=8.50]]
- World MpServer Players: 1 total; [atg['Dwarg91'/283, 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; []

Any help would be apreciated
Update: I have tried any kind of fresh install of minecraft and BTW you can think of and it still is giving me this error. Also I have tried it on two computers in my house and they encounter the same error.

[Dwarg91]

Ok tried it with just Modloader and Better than wolves and I am still getting this error. Thankfully I still have my 1.2.5 jar so i can still play Btw.
Also tried doing a fresh install of Minecraft, no change, still getting that damned error. If ANYONE is able to figure out what my minecraft is doing you will have my undying gratitude.

[darahalian]

What are you using to install your mods? The error screen has things I don't recognize as usually being there. Are you using magic launcher or something?

[Dwarg91]

No magic launcher, I install them as recomended by the mod creators.

[darahalian]

Well, then I have no idea. You said you already tried a fresh install of minecraft. Maybe try again, but delete Everything first? (backup saves first of course) Assuming of course that this isn't what you already did... :/

[Dwarg91]

That is what I did.
It's really frustrating when you can't figure out what's going wrong with your install when you have been following the instructions.

[SterlingRed]

Try it without biosphere. Btw may conflict since the 1.3.2 update. I haven't heard anything on biosphere compatibility in a while. Worth a shot.

[Dwarg91]

Already tried that SterlingRed. Even tried just ModLoader and Better Than Wolves. It doesn't matter whether I enter an existing world or create a new one, I always encounter that error.
Though I can still play in 1.2.5 (Yay backups!).

[SterlingRed]

And to be sure, you are starting with a clean .jar? If not, delete the entire bin folder and let Minecraft redownload.

[Dwarg91]

I even did a full fresh download of the .minecraft folder, and that is when I tried just BTW and ML.

[FlowerChild]

You sure you don't have any lingering remnants of other mods in your mods folder?

[Dwarg91]

I am sure. Even deleted .minecraft and had it re downloaded just to have that extra layer of sureness.
I'm actually coming to my wit's end with this, I mean I've done evrything that I could think of, even re-installing java and nothings working! Just what do I have to do to get minecraft to work? Would sacraficing a sheep to the java gods do it? I mean shesh, for something that should be simple it sure does seem like it wants to fuck with me.

[FlowerChild]

Ok, last piece of advice:

*Make sure* to redownload both Modloader and BTW. It wouldn't be the first time someone thought they had the most recent versions and didn't actually.

Start again with a fresh .jar. Install *just* Modloader. Run the game, make sure it works. Then install just BTW. Run the game, make sure it works.

Let us know how that turns out.

[Dwarg91]

Absolutely clean and fresh downloads of the entire .minecraft folder and the absolute latest ML and BTW downloaded, and still I get this error.

[FlowerChild]

Absolutely clean and fresh downloads of the entire .minecraft folder and the absolute latest ML and BTW downloaded, and still I get this error.

All right, but did you try with just ML installed? And you did *redownload* them to be sure, yes?

The error is obviously on your end man, and I'm trying to help you find out what it is.

[Dwarg91]

Yup did re-download them and even ML alone produces the error. Kinda figured that it's my end since no one else seems to have this problem and I thank you for your help.

[FlowerChild]

Yup did re-download them and even ML alone produces the error. Kinda figured that it's my end since no one else seems to have this problem and I thank you for your help.

Ah, ok...so what we're looking at here is a Modloader installation issue as opposed to a BTW one.

Can you describe how you're installing Modloader?

[Dwarg91]

I use .7z to unzip the minecraft bin then I drag the contents of modloader into the minecraft folder overwriting the original class files then when I have all the mods copied over that don't go into the mods folder I zip the files up into a folder called minecraft.zip then I rename that to minecraft.jar putting it into the bin folder when done.

[FlowerChild]

meta-inf is deleted as part of that yes?

[Dwarg91]

Always is. And I can quickly diagnose and fix that ebkac.

[FlowerChild]

Don't know what to tell you then man. Something is obviously fucked with your Modloader install, so my only advice would be to go ask for help over on the MCF ML thread and see if anyone recognizes your error.

[Dwarg91]

Thanks for the help. You were very kind in your suggestions and I hope that this will help people in the future in diagnosing such an error.

[sargunv]

Instead of unzipping, adding the files, then creating the archive again, try adding the files directly to the jar using 7zip or WinRAR.

If you're using 7zip:

1. Right click on a fresh minecraft.jar
2. Go to 7-zip -> Open archive
3. Drag the mod files in
4. Close 7-zip and run the game

The process should be similar for WinRAR.

[Dwarg91]

Ok tried to install ModLoader into the .jar without extracting and .7z won't allow me to do that and I don't want to deal with the mess that is getting WinRar, so I got MultiMC and that is working.
Now the reason why extracting the files from minecraft.jar won't work is that aux isn't a valid file name in Windows so any program that you could use to extract the files will rename aux.class to something else thus breaking minecraft.
So in short, this problem is not with ModLoader or Better Than Wolves but illegal filenames in Windows.

[weldaSB]

Dont do any extracting
Right click on minecraft.jar
highlight 7zip
click open archive
find the modloader download
right click
highlight 7zip
you will now have 2 7zip archives open
go into the one for modloader
press ctrl+a to highlight everything
drag these files into the window of the minecraft.jar archive
a box will pop up
select yes
once this is done, find the minecraft.jar archive
right click in the META-Inf folder
press delete
press yes
close the archives
run minecraft