So after the last maintenence check for Last Chaos (which was Aug 8, 2012 I believe) it hasn't allowed me to launch the game it's not only me because it's been happening to two other people that I know play this game. We've all tried re-installing it to see if that makes a difference but it doesn't! I've also downloaded a different game on Aeria Games to see if that could be the main problem but it's not because it successfully allowed me to download and play Shaiya without any complications launching it! I really wanna fix whatever the problem may be but I really need some HELP! Someone PLEASE get back to me ASAP!

Some players have this issue. Their AV ate files from the patch. It is why I changed what one I used cause it was always locking up LC files.
Go here. http://www.aeriagames.com/forums/en/viewtopic.php?t=1170810

thankss so muchh!!! )