Minecraft Forums

prerequisite: something that is required BEFORE something else

ModLoader is a prerequisite of other mods. You are using a mod that has a prerequisite IN ADDITION to modloader. Go read your mod descriptions and find out what it is.

Alright, I'm confused.
For modloader, it says "the main class of the mod should be prefixed with mod_". I understand that, but what does it apply to? Once you install modloader, change the main class files to mod_*insert rest of name here*, or only that, once you've installed modloader, whenever you install different mods, you have to add mod_ to them?

Quote from Richasackboy »

Alright, I'm confused.
For modloader, it says "the main class of the mod should be prefixed with mod_". I understand that, but what does it apply to? Once you install modloader, change the main class files to mod_*insert rest of name here*, or only that, once you've installed modloader, whenever you install different mods, you have to add mod_ to them?

mod_ only applies if you are making a mod that uses ModLoader, the end user does not need to change anything.

i follow directions to a T on my mac. game still crashes. my face ---->

I do eeverything correctly for the spawner gui, but when i right click it, i get this message:
Minecraft has crashed!
----------------------

Minecraft has stopped running because it encountered a problem.

If you wish to report this, please copy this entire text and email it to [email protected].
Please include a description of what you did when the error occured.



--- BEGIN ERROR REPORT a1dce528 --------
Generated 2/20/11 3:27 PM

Minecraft: Minecraft Beta 1.2_02
OS: Windows Vista (x86) version 6.0
Java: 1.6.0_23, Sun Microsystems Inc.
VM: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
LWJGL: 2.4.2
OpenGL: GeForce 6100 nForce 405/PCI/SSE2/3DNOW! version 2.1.2, NVIDIA Corporation

java.lang.NoClassDefFoundError: ModLoader
at ca.a(ca.java:16)
at kb.a(SourceFile:86)
at net.minecraft.client.Minecraft.a(SourceFile:968)
at net.minecraft.client.Minecraft.i(SourceFile:1130)
at net.minecraft.client.Minecraft.run(SourceFile:642)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: ModLoader
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)
... 6 more
--- END ERROR REPORT 4fdc5d1e ----------

Any help?

You didnt download modloader???

Installed ModLoader on minecraft. I got a crash. Here's the report.

http://pastebin.com/PUn51rEL

The weird part is, that wasn't the only mod I had....

Any ideas?

Hey guys, another idiot has come to figure out just why his copy of ModLoader is failing miserably. I'll try to be as thorough as possible.

I have a completely clean copy of Minecraft, version 1.2_02 with HD game files. I've downloaded TFCs Mod Manager, and watched the videos to ensure I did this correctly. I downloaded ModLoader, grabbed it, and dragged it into TFCs Mod Manager. Everything goes smoothly... This is the only mod that is currently being added to the minecraft .jar (I'm brand new to Minecraft and modding in general). Once it finishes, I start Minecraft, Play Offline mode. I click on Single Player, and click on an Empty World slot. Building Terrain....Saving Chunks.... Then it freezes for awhile, and I get a Crash log. Here it is:

Minecraft has crashed!
----------------------

Minecraft has stopped running because it encountered a problem.

If you wish to report this, please copy this entire text and email it to [email protected].
Please include a description of what you did when the error occured.

Mods loaded: 1
ModLoader Beta 1.2_02v4

--- BEGIN ERROR REPORT 9e30d104 --------
Generated 2/20/11 3:48 PM

Minecraft: Minecraft Beta 1.2_02
OS: Windows 7 (x86) version 6.1
Java: 1.6.0_20, Sun Microsystems Inc.
VM: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
LWJGL: 2.4.2
OpenGL: GeForce 9800M GTS/PCI/SSE2 version 3.3.0, NVIDIA Corporation

java.lang.IllegalAccessError: tried to access method ll.c()V from class pe
at pe.a(pe.java:31)
at SMGUI.a(SMGUI.java:68)
at ll.b(SourceFile:369)
at net.minecraft.client.Minecraft.run(SourceFile:705)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT cbe08e69 ----------

I've tried everything I could think of. Older versions of ModLoader... a whole new download of Minecraft, completely clean .jar.... I'm at a loss. Seeing as this is needed in MANY of the mods here, any help would be appreciated.

I can't get spawner gui to work, I deleted META-INF, I drag and dropped the right files, everything. Also, how do I use it?

Quote from VictorAlkaiser »

....

So you used some other tool to install and did NOT follow the instructions.. seems you should be asking for request in the mod manager thread.

I did follow instructions. That tool did exactly what any other tool would have done. It opened the .jar and placed the files within said .jar, so YES I followed instructions. But just for shits and giggles, I put it in myself...and am still getting the same error.

Quote from smith_61 »

Quote from VictorAlkaiser »

I did follow instructions. That tool did exactly what any other tool would have done. It opened the .jar and placed the files within said .jar, so YES I followed instructions. But just for shits and giggles, I put it in myself...and am still getting the same error.

Where in the instructions does it say to use any other tool besides an archive program or terminal?

And you probably have an old version of modloader.

no he doesn't i have the EXACT same problem! I will tell you what i did:

1. download audiomod
2. open the .rar
3. open terminal and put in the text
4. put the .class files in mctmp
5. input the other text
6. I did not enjoy

and YES i deleted everything inside of META-INF


WAAAIT... hold the phone, when i just did it for audiomod it worked... it also worked when i only did modloader

maybe they just hate each other because of the update?

yes im right, something inside one of them isn't working with the other and its causing these epic fails

When I drag .class's into my .jar they don't appear...

Quote from smith_61 »

I just installed fresh downloads of both audio mod and modloader with a fresh install of minecraft.jar. Guess what no crash. You guys must not know how to install mods. You can say you've followed the instructions to the T or even the I. I can say i walked to the ends of the earth but does that mean i did it? No. If your game crashes its more then likely a bad install by the end user.

Dont worry he's mentioning mctmp (which means following mac instructions) and then said deleted "everything" inside meta-inf. Everyone who knows how to install mods knows that will cause black screens on mac. So still doing something stupid (aka not following directions)

Quote from Ovelite »

When I drag .class's into my .jar they don't appear...

Then use 7zip.