[1.6.2]FML doesn't launch when minecraft.jar is modified.

[bl4ckscor3]

Hello! How can I install OptiFine and other .jar mods with Forge? Everytime I add or delete files from the 1.6.2-Forge9.10.0.784.jar it says the following in the console:

Client> 2013-07-10 19:15:37 [sEVERE] [ForgeModLoader] The minecraft jar file:/C:/Users/donal_000/AppData/Roaming/.minecraft/versions/1.6.2-Forge9.10.0.784/1.6.2-Forge9.10.0.784.jar!/net/minecraft/server/MinecraftServer.class appears to be corrupt! There has been CRITICAL TAMPERING WITH MINECRAFT, it is highly unlikely minecraft will work! STOP NOW, get a clean copy and try again!
Client> 2013-07-10 19:15:37 [sEVERE] [ForgeModLoader] For your safety, FML will not launch minecraft. You will need to fetch a clean version of the minecraft jar file
Game ended with bad state (exit code 1)
Deleting C:\Users\donal_000\AppData\Roaming\.minecraft\versions\1.6.2-Forge9.10.0.784\1.6.2-Forge9.10.0.784-natives-262605343607704

 

 

Thanks for any help!

~bl4ckscor3

[Tiim]

As far as I know, Optifine isn't compatible with forge anymore. Source: Twitter

[Yagoki]

forge no longer allows jar modification http://files.minecraftforge.net/minecraftforge/minecraftforge-changelog-1.6.2-9.10.0.789.txt

now just beware of the wrath of Lex 

[bl4ckscor3]

And how can I install mods which belong into the jar? I think I can't

[Yagoki]

you need to wait until they adopt the new way of installing (i.e. with the installer) OR don't use forge (for now), your choice.

[bl4ckscor3]

Ok. Seems like I have to abdicate OptiFine

[LexManos]

1) This is cpw's doing read the damn logs

2) NOTHING should touch the jar anymore in 1.6. Not even Forge or FML need to touch the jar, why the hell should anything else?

3) It IS possible to bypass this, but it's up to the Jar-Modders to do so and we WILL NOT support it here.

[shadygamer93]

Heres a video to help people install Optifine with Forge 1.6.2 

 

http://www.youtube.com/watch?v=2Vb41zyesUM

[endershadow]

how would I make an installer for my mod? it's a normal mod, but I think it would be cool to have an installer for it.

[Mew]

how would I make an installer for my mod? it's a normal mod, but I think it would be cool to have an installer for it.

I would be annoyed as fuck if I had to download an installer that does nothing but put a zip file in a folder. If people can't do that themselves, don't let them play modded minecraft. You don't need an installer for everything.

My opinion.

 

Agreed. But if you had something like Pixelmon, but say with about 10 databases (I don't see this happening anytime soon) that need to be in specific locations, then maybe make an installer. But aside from that I agree with diesieben.