So im currently trying get MC 1.1 Forge to work. I have all the files installed the client from here forge-1.1-1.3.4.29-client and modloader 1.1 and ModloaderMP 1.1 v4 for MCarchives website i was able to make the meta inf go away and stay way to be able to mod it like u did old school back in the day (even testing it by replacing the "char.png" with my own skin and it all stick the meta-inf doesnt comeback or anything. So i followed and old installation video. i put everything in the jar file correctly but this crash keeps coming up and i know its a long shot but i really wanna try and get it to work and would appreciate the help!! Thanks in advance! Crash Report below:

Mods Loaded: 1 ModLoader 1.1

      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 9c4f49b2 --------

Generated 1/23/26 2:56 AM

Minecraft: Minecraft 1.1

OS: Windows 10 (amd64) version 10.0

Java: 1.8.0_51, Oracle Corporation

VM: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation

LWJGL: 2.9.0

OpenGL: NVIDIA GeForce RTX 3070 Ti Laptop GPU/PCIe/SSE2 version 4.6.0 NVIDIA 581.80, NVIDIA Corporation

java.lang.IllegalArgumentException: URI is not hierarchical

at java.io.File.<init>(File.java:418)

at ModLoader.init(ModLoader.java:817)

at ModLoader.AddAllRenderers(ModLoader.java:189)

at afq.<init>(afq.java:80)

at afq.<clinit>(afq.java:9)

at net.minecraft.client.Minecraft.a(Minecraft.java:316)

at net.minecraft.client.Minecraft.run(Minecraft.java:620)

at java.lang.Thread.run(Thread.java:745)

--- END ERROR REPORT e3faf6e4 ----------

and yes i do also have java 8 installed correctly as well so still not sure what else it could be

Nvm was infact able to get 1.1 Forge to work finally. Currently running, mod tested, and working fine on the current modern minecraft launcher