i downloaded the .jar for optifine, but when I try to open it in Java it gives me black window for less than a second and then doesn't work. Using the most recent preview version of Optifine (Minecraft 1.4.2), on Windows 10. Any suggestions?
If you use the .jar file option for Optifine, you install it like other mods under Forge. DO NOT open .jar files.
"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."