solver

Build 2nd floor with 0" height.

Build roof.

Build walls as needed on second floor.

Set "Attic" areas on second floor to Attic as required.

Posting an image of what you are trying to model will help us.

Always best to start a new thread, even though your issue is similar.

You need a second floor to build living space in. Attic space is not a second floor.

I'd try uninstalling and then install.

You may also open a ticket with support so they will have it Monday AM. They are normally quick to respond.

I looked at the plan, and you are drawing the plane wrong. You always draw the baseline, then release the mouse button, then drag up towards the ridge.

Check out some of the YouTube videos on roofs. Remember, ceiling planes work like roofs. Here is a good one.

Mike -- did you see post 15?

Looking at your last image, I'm guessing you are drawing in the new ceiling plane in the wrong direction.

Start 90 degrees to the outside wall.

This is not simple for me. One time it works easily, the next not at all. I almost never use ceiling planes, so maybe someone with more experience will post.

Where is DJP with a video???

Like roof planes, ceiling planes should be drawn from low to high, so start at the point where the new plane joins the wall and existing ceiling plane. 

Change the height -- see the images.

Join the planes together, copy the one just drawn and reflect about the center of the gable. Now join the 2 newly drawn planes together at the ridge.

Using the CAD tools, you may create the detail. You don't need the program to do it automatically.

Here is a 2015 version. Done quickly after last nights practice.

I deleted your gable roof planes, set breaks in the wall, selected the center part of the wall and set it to gable, then rebuilt the roof. Just to make sure the roof is correct.

Draw in a new ceiling plane. Set the pitch to match your other ceiling planes. Its height needs to be changed as well -- look at its specifications for the settings.

Turn off the display of roof planes so I'm not selecting them.

Drag it (the ceiling plane) to rough shape.

Select it and join it to the larger ceiling plane using the Join Roof Planes tool.

Select the ceiling plane just drawn, copy and reflect it around the center of the gable to form the other side.

Join it as above.

Took longer to type this than to do.

**** Also noticed the bedroom wall is not straight. The default settings make this difficult to do, so something may need to be set back.

x2.plan

Ceiling planes act like roof planes -- they use the same tools to join them.

I never use ceiling planes so this took some work to get it looking good.

Not much help, I know.

Truss Test 2.plan

best to post the plan

Could you be more specific about what you are doing?

You may save blocks -- I have entire kitchens saved as a single block.

I don't know, but I have seen this behavior myself and never understood the cause. My suspicion is use of the Material Eyedropper which I use all the time. 

Often I notice in a 3D view after making multiple changes in plan.

I did draw in your other dormer and it worked fine.

You need to click "Select Material", then "OK" in the next dialog to reset to the proper material.

You could also use the Material Eyedropper.

As usual, posting the plan will help us help you.

That's correct. You will need Pro to do manual roofs.

Could you be more specific about the look you are wanting to achieve?

Maybe an image?

The cap is a custom countertop -- used because the default color is what I wanted, but a soffit or slab would also work with an applied finish.

You will find soffits useful for many things. 

Here is a suggestion. New users seem to want to add a huge amount of extras to the plan as they are drawing it and focusing on the little details. Suggest getting the complete structure correct first -- floors, walls and roof. Then make a copy of the plan and start adding extras.

Pony Wall -- Stone and glass.

And with a granite cap.

I'd draw this starting with floor 1 as the lowest level, and not use a basement/foundation/floor 0.

Here is a tip for drawing a shape like the hull. Draw a CAD line that represents the centerline (keel).

Now draw half the hull to one side of the line. Once you have the shape correct, Copy the walls, then Reflect About the CAD line to produce a perfect mirror image. You could do this for any items that are the same side to side, like the stairs on the back.

Setting Floor Structure to 1/8" and I get this.

You have Finished Floor set to 0. When I set it to 1/8", I only get part of the floor.

How do I add a layer? 

Lets say I want 2 layers of ply over the joist.