Spatial-wireframe will not work out of the box for me. It tries to read objects from a file. In the files, '.' is used as decimal separator, but the code uses Double.Parse(string) (that is, using system default cultureinfo, and for my system, that means ',' is expected decimal separator)
I had to change ObjLoader.cs, replacing Double.Parse(a) with Double.Parse(a, CultureInfo.InvariantCulture) for all Double.Parse, and add using System.Globalization.