Hi Tom Bennett,

Perform the following test, in a new and empty file
- Step 1--> Go to the Detail tab--> draw a circle (second icon)--> select the circle--> properties bar--> convert to--> exterior walls
- Step 2: Go to the roof wizard--> create a roof (any pitch)

The roof should look as the image attached, it is the way the wizard works

Back in your drawing check
- if the wall's perimeter is closed and leveled(as in the example above)
- the walls are in right elevation

If this doesn't work, zip and send me your file, and I'll check it

Patricia
[email protected]