DaemondCreep

Ok it works, I just had to put the optifine.jar in the mods folder... I don't know who told me to copy and paste in the modepack.jar

So when I launch RLCraft normaly, it works, but as soon as I download Optifine, it just dosent load and comes right back to the Technic Laucher. https://pastebin.com/tU8ErVvP I just copied optifine from there https://optifine.net/adloadx?f=OptiFine_1.12.2_HD_U_E3.jar as they say on the RLCraft page, and copied everything from 7zip into modpack.jar and then delete METAINF from both modpack.jar and minecraft.jar