Since some mods ((ie. optifine and BACR)) still need to be put in the jar, I easily made it so I could edit the jar even with forge installed on it((just put the forge files actually in the jar, use the JSON file from the installer version, profit)). It kept working in 9.10.0.779 but anything up from that, FML said minecraftserver.class was corrupt even though I didn't touch it at all. Any help?