A Summary of Errorserror (110) — GameMon is already running. Either close GameMon process or reboot and execute again.
error (115) — Game has been executed multiple times, or GameGuard is already running. Close the game and restart.
error(112) — Failed to load modules for checking viruses and hacking tools. Possible causes are lack of memory and virus infection.
error (114) — Failed to initialize GameMon. Try rebooting or closing possible programs that can cause a collision.
error (124) — GameGuard.des file does not exist or is modified. This can be resolved by installing GameGuard setup file.
error (150) — Setup file for GameGuard does not exist or is corrupted. Download setup file for GameGuard and install at GameGuard folder.
error (153) — GameGuard.des does not exist or is corrupted. Re-install of GameGuard setup file should solve this problem.
error (155) —Windows system file is damaged. It is recommended to check virus, andreinstall Internet Explorer or rsabase.dll in the system folderaccording to Internet Explorer version.
error (170) — Failed to execute GameGuard process. Reinstall the GameGuard setup file and try running the game again.
error (200) — An illegal program has been detected. Close unnecessary programs and try again.
error (380) — Failed to connect to the GameGuard update server. Try connecting again in a while, or check the network connection.
error (340) — Failed to download. Network might not be stable currently, Internet or firewall settings might be having some problems.
error (350) —Cancel(Abort) button has been clicked while updating. If it is due tothe failure of connection, try connecting again or confirm its networkstatus.
error (360) — Update is not successful or GameGuard file is corrupted. Try again in a minute, or check the firewall settings.
Taken from the MSEA website
here (which happens to be Firefox friendly!). They actually have an FAQ and provide some help on solving some of these errors!