Just in case Optifine is the only mod you are using you do not need to install Forge to use Optifine; in fact, you'll offset much of the performance gains that Optifine provides since Forge adds a lot of overhead when modifying the game to enable mods to indirectly interact with it ("vanilla by itself is more efficient than even Forge+FoamFix [another optimization mod]". Optifine is what is often called a "jar" or "vanilla" mod, meaning it directly modifies the game so it doesn't need a modloader, and is the most efficient way to mod the game).
I have reinstalled Java and forge. The game directory is in the right location. I am stumped as to why this isn't working.
Run the basics:
1. Is MC properly installed?
2. Did you make a vanilla world to make sure that works properly?
3. Did Forge install properly?
4. Is the Profile using Forge?
5. Did you make a world with just Forge first (no mods)?
6. Forge will create the extra folders you'll need, including the mods folder.
7. Is the mods you want the same version as MC and Forge (for example 1.10.2)?
8. Did you copy the mod files whole (no unzipping, extracting, ect.) into the mods folder?
"We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far."
Just in case Optifine is the only mod you are using you do not need to install Forge to use Optifine; in fact, you'll offset much of the performance gains that Optifine provides since Forge adds a lot of overhead when modifying the game to enable mods to indirectly interact with it ("vanilla by itself is more efficient than even Forge+FoamFix [another optimization mod]". Optifine is what is often called a "jar" or "vanilla" mod, meaning it directly modifies the game so it doesn't need a modloader, and is the most efficient way to mod the game).
TheMasterCaver's First World - possibly the most caved-out world in Minecraft history - includes world download.
TheMasterCaver's World - my own version of Minecraft largely based on my views of how the game should have evolved since 1.6.4.
Why do I still play in 1.6.4?