I install optifine into every modpack I play, so when I downloaded Divine Joruney (a 1.7.10 pack) I downloaded 1.7.10 optifine as well to put in it. I made sure that the pack was NOT LOCKED! I downloaded Optifine 1.7.10, installed it, moved it to the mods folder, but when I try to launch the pack the launcher comes back up saying "It looks like you are using an unsuported modified version of the game" then it follows with "The game crashed whilst initializing game" and "Error: java.lang.NoClassDefFoundError: net/minecraft/client/renderer/texture/TextureMap" I went online to see if anyone else had this issue, or a similar issue and one person said to copy + paste optifine into the mod folder, not just directly move it over. I tried that and the game actually loaded that time, but Optifine wasn't in the pack! I don't know what else to do please help!