DBCooper

It looks to me like those two gables and the hip corner are confusing Chief. See if you can simplify the situation if it will start working better. In any case, I would post our plan or send it into tech support.

When you see strange things in the camera view, does rebuild 3D fix anything? Sometimes this will fix strange things. If I ever have problems with the "replace" tool, I will go into the dialog and change what I want instead. If you haven't done so already, you should send this into tech support.

I just made the "hole" a normal polyline using a solid fill and the invisible line style. This is what I use pretty much anytime I want to create a mask. This seems to work pretty good unless you need a real hole, like for a counter top or something.

You can click to to place a point light but if you drag you can create a spot light pointing in the direction you want.