Try the following method. 1. Restart your PC 2. Completely delete the GameGuard folder. (Go to C: > Program Files > Webzen > Mu > GameGuard) 3. Start MU Online.
The error message popped up after the game crashed. It was just a tiny little notification window from GG that closed itself suspiciously quick on its own.
This error occurs either because of an improperly installed Rockstar Games Launcher or because another application is preventing communication with Rockstar ...
The error 1002 and/or 1003 are related to invalid files. Mods and applying addons are seen as invalid files. 0sigbypass plugin is used to skip the file ...
Your insider build is too new to gameguard, thus it can't run it's compatibility layer correctly. You either can A) Wait it out for god knows how long, or B) ...