Can you please be more specific about the problem. How far can you get - does it start the updater? Does it get to the game`s loading screen? Any errors?
And you should start by trying everything here: http://www.reverieworld.com/forums/s...6&postcount=94
And if that doesn`t help, try this as well:
1) Look up you Users AppData/Local/ folder. Locate folder DoF and DoFUpdater and delete both of them
2) If it still doesn`t work - again in AppTate/Local/ look up Temp/RarSFXO/ locate file SECOND and delete it.