Forge Mod Loader has found ID mismatches Complete details are in the log file ID (several id's) is mismatched between world and game I don't know how to fix this because until this is fixed I can't connect to the Horizons server. Any help would be great, Palepixie
what id and which launcher ? (ftb launcher or mym launcher) and please create an own thread with it as this one is marked done and your problem might not be seen. Edit: nvm