Gable wall assistance

[Jay82]

Hey Guys
I know this is 101 for any roof guy out here although Im having a little issue. Just trying to do a gable end wall manually. I draw the rof planes manually, and automatically the attic wall appears in the plan view on the next floor. My problem is when I got to elevation view my attic wall is not their. Ive tried rebuilding (f12).....and nothing.

Up to this point Ive always used the automatic roof tool and it will automaticaly put in the gable end wall for you. Is their a step im missing when creating the gable wall manually.
Im at work right now putting in time using the trial version or I would send through a pic. I have to get the actual plan done at home tonight.

Using x1

Thanks in advance

Jay