Hey guys! I am trying to mod my Minecraft 1.6.2 with Optifine, as well as leave room to further mod. I have the latest version of optifine, and am using the latest version of minecraft forge as well. I have installed forge, and have verified that it works through the mod folder, but Optifine is a coremod, and must be put directly into the minecraft.jar for it to work. I put it in, and when I launched my game, it said that the .jar file was corrupt, and that I needed a new one. Any suggestions on how to install Optifine with forge? Thanks!
I'm having the exact same problem. I'm using the latest version of Forge with Journeymaps and they both work fine but every time I try to install optifine the .jar gets corrupted.
Thank you SOOOOOOOO much! You rock!