Solved I can't open again my client ! !

Spoiler: T_T

currently playing aion again.. need to reboot my PC twice.

 

Go to your Aion folder -> Rght click -> 'Properties' -> unstick 'Read-only' -> 'Apply' -> 'Apply to all subfolders' -> 'OK'.

If it doesn't work then do the following:
Go to your GamezAION folder -> Right click on GamezAION.exe and select Properties -> Compatibility -> Run compatibility troubleshooter -> Try recommended settings -> Test the program -> Save settings.

And if the two solutions didn't work in your case, drag the bat file to your GamezAION folder and run the game.
http://www.mediafire.com/file/rcdqkv83h2kgk3v/GamezAION+32bit.bat
http://www.mediafire.com/file/25bknfvzcdmk227/GamezAION+64bit.rar

 

I don't know how but it's ok right now.. tnx

 

Alright, glad you accidentally managed to solve the problem