Ah so Windows 8.1. There is a post here on the forum stating:
“Contrary to the vorpX 0.71 documentation you may have to set the display orientation to “Landscape Flipped” instead of “Portrait” when using Windows 8.1.”
Also you can try restoring the game config in vorpX config -> Trouble hooting -> selecting the game -> Restore Selected
Or if that doesn’t work, do a full factory reset on the same page.