Solar Panels

[ampatt]

I'm using Suite 2014 and am trying to place solar panels from the Energy Sources bonus package. If I try to place them on the roof in camera view I get an error message that the area is too constricted. The program seems to want to place them only on a flat surface since it will place them on the sundeck and on the ground, but of course that's not where the panels need to go. I also tried placing them on the top floor in 2D floor plan view and that works to an extent - they appear perfectly on the surface of the hipped roof in 3D view, but I can only place them on the floor plan in an area with no other objects - walls, staircases, even furniture. Anyone know how to do this? Thanks.