Yeah, default resolution and overall video config is something done through the default Ogre configuration box.
While this is a temporary thing, we'll have to keep it for the next release. Once we'll fully support standard paths + a configuration file, we change this to select the resolution and other things with custom code and through custom option menus.
The fact that the game froze when clicked on the buttons while it loaded is interesting though and should be tested.
Feel free to keep reporting bugs anyway.