I cannot open the program past the choose a theme screen. The "OK" button is off the screen and the screen cannot be resized to access it so the program will not proceed.
Try changing the screen resolution.
Its at the maximum resolution.
And that resolution is?
Hitting the "Enter" key should serve the same as clicking the "OK" button by the way.
The minimum system requirements for display are 1280 x 1024 or higher. Using a display smaller than that will result in many things not fitting in the display area.