When you extracted and installed your game, did you happen to save it in a different place that has another GameGuard installed? Try installing it to a different place (or it's default location).---After reading around and using the search function, it doesn't seem like any admins/mods/tech replied with a proper solution. Through google, other games had a similar problem. You can try deleting (or move it to a different location outside the GrandChase folder) the gameguard.des file and let it auto/self install the moment it patches.
Click the CakeDogg http://cujoex.myFire Bolt! FIGHT ME!
nope alot of ppl are having the "7c" error, but nobody is working on it....I even looked it up for Grandchase being played in other countries, and they still have problems....I even tried one of their suggestions and deleted the whole gameguard folder and update it....lol stupid thing redownloaded the incomplete gameguard folder (again)....lol