Question: how i can install optifine?

[TheNewR00t]

I get this error and from what I see it needs a file called "launcher_profiles" but I don't know how to create it manually and make it functional, does anyone know?

[AlphaBs]

just copy it from %appdata%/.minecraft/launcher_profiles.json. it created by Mojang's Minecraft launcher.

[TheNewR00t]

Yes, but I say how do I get the launcher to do it by itself?

[AlphaBs]

The contents of the launcher_profiles.json file are not important. Hardcode the content of the file created by the Mojang launcher into your launcher and write the file as is.