Seems for any reason you have "Naked edges" on your windows objects something is wrong on the Paths of the window!!
so solids can't be created!

<< a "Naked edge" is an edge that belongs to only one surface instead of where 2 surfaces are joined together.

<<The main use for identifying these is if you're trying to make your object into a closed solid. A closed solid needs to have all joined edges and no naked edges.

<< Also even if you're not making a solid it can help to identify if there are unwanted gaps in any areas.


script: /* Naked Edges */ var gd = moi.geometryDatabase; gd.deselectAll();
var breps =gd.getObjects().getBreps(); for ( var i = 0; i < breps.length; ++i )
breps.item(i).getNakedEdges().setProperty( 'selected', true );