Suddenly can't log in - getting this error - Unable to write to Exception: Cannot open file - C:/Program Files (x86)/Sony/EverQuest/EQGraphicsDX9.dll (13) - http://eq.patch.station.sony.com/patch/sha/eq/eq.sha.zs/45/647/3e687e629ebc8619ca42c534c6b26dc802c. The file may be in use or you may lack the necessary permissions to install.
Ditto Ok figured it out. It is trying to update the dll file, so it cannot do this if you have another instance of EQ running. Shut down all accounts, then log on and that will update it, then you can log on the other accounts.