Section wont render

[How]

I have created a DTM with 3 massing models and need to take various sections. I have tried this using the section viewport tool and have succesfully got a section that shows the back ground image but only as a wire frame or hidden line. I reset the render menue in the viewport box to renderworks with shadows and updated but nothing. I made the dtm settings to solid fill a colour in 3d view. Is there anything else i can do?

Thanks

[Jonathan Pickup]

when you draw your massing models, do you have a solid fill to your attributes palette?

[How]

yes the massing models are solid.

What i ahve found is if I take a 3D view and set the perspective to normal it will render fine, but if i set it to orthogonal or perspective it only renders a very thin area of the DTM. i dont know what this means or how to fix it but i do know that i am very late in getting these sections drawn.

Is there any way of taking a 2D section that will show the buildings and any of the background info like mounds or trees?