Failure on hull of two spheres

[KeithSloan]

The following file fails

group() {
	hull() {
		multmatrix([[1, 0, 0, -15], [0, 1, 0, -15], [0, 0, 1, 0], [0, 0, 0, 1]]) {
			sphere($fn = 0, $fa = 12, $fs = 2, r = 5);
		}
		multmatrix([[1, 0, 0, 15], [0, 1, 0, -15], [0, 0, 1, 0], [0, 0, 0, 1]]) {
			sphere($fn = 0, $fa = 12, $fs = 2, r = 5);
		}
	}

}

FreeCAD Report View

6:07:56  hullTwoSpheres
16:07:56  5.0 mm
16:07:56  Traceback (most recent call last):
  File "/Users/keithsloan/Library/Preferences/FreeCAD/Mod/OpenSCAD_Alt_Import/OpenSCADHull.py", line 31, in execute
    obj.Shape = createHull(obj.Group)
  File "/Users/keithsloan/Library/Preferences/FreeCAD/Mod/OpenSCAD_Alt_Import/OpenSCADHull.py", line 474, in createHull
    return hullTwoSpheres(obj0,obj1)
  File "/Users/keithsloan/Library/Preferences/FreeCAD/Mod/OpenSCAD_Alt_Import/OpenSCADHull.py", line 337, in hullTwoSpheres
    p1, p2 = c4.intersect(c3)
<class 'ValueError'>: too many values to unpack (expected 2)
16:07:56  Recompute failed! Please check report view.
16:07:56  Group
16:07:56  End Parser
16:07:56  [<Part::PartFeature>]
16:07:56  End processing CSG file