MCPatcher HD Fix 1.16.4/1.15.2/1.14.4 is a powerful java-based appplication for Minecraft which allows you to switch between mods and texture packs in Minecraft without closing the game.6 - When you run the modpack, you should see optifine there in all its glory. If not, click 'add mod' under the disabled mod's list, and find the jar file you just placed in the mods folder. You should be able to see optifine has been automatically added to the Enabled mod's list. 5 - Run the ftb launcher, select your modpack, and hit edit modpack.java.io.FileNotFoundException: C:\Users\Jack\AppData\Roaming\.minecraft\versions\1.14\1.14.jso. dunno what it means, tried reinstalling minecraft, googled it, all that standard stuff. So basically im trying to install the preview version of optifine foir 1.14.1 but i get this message.
