Should open game,have it crash on you,go to "C:\Program Files\Reverie World Studios\Dawn Of Fantasy"
In there is a file called log1
Attach it here,will help the devs figure out whats going on.
After that,would try and run updater as admin,if you can get into the screen after login,would change all graphics to lowest settings and restart.
Would also make sure directx and video/sound drivers are newest versions,perhaps even restart your computer.