This is a simple modification to the Combat Abilities Window. It is vertically aligned, using longer, narrower buttons.

It's a bit longer than other windows in Delta 4.0, so it doesn't sit below the main graphics of the UI very well, but it does match the UI in look and feel.

While this mod is pretty self-contained, it doesn't work well with the default UI unless you want to edit the size values of the window and the buttons (The window is too short vertically in the defualt UI.)

The buttons are all 116 pixels long, by 24 pixels high, and the label has been set to the same size.

This mod generates no errors.