So I have an old texture pack that I really liked and I decided to run that version of Minecraft again just to play with that texture pack.
The version that the texture pack was built on is 1.5.2 so I decided to load Optifine on that version (Which I've done in the past no problems. I not a noob when it comes to stuff like this.) so I went to the versions folder the to the 1.5.2 folder I renamed that folder and the .jar and .json plus went in the .json and changed the version id to match the rest so that they were all named Optifine_Old. then I proceeded to install Optifine Note: I've used the Ultra version and the standard versions of Optifine but get the same result. I've also tried everything with and without the META folder inside the .jar but when I go to play the game I select the version that I made which is listed there as release Optifine_Old so I click it and save the profile then hit play and it re-downloads the .jar resetting the .jar back to the default contents. I haven't had any success in getting it to work. Any thoughts?