What is wrong with this wall?

[Katalyst777]

Can anyone tell me what's going on with this wall? As you can see from the overview, it's only the siding and plywood sheathing. It's defined as Siding-6 and you can see the attached wall (which is the same thing) is working just fine.

I've deleted and reinserted this wall, to no avail.

Thanks.

Is the wall maybe slightly off angle from the one above it? If you held down the Control key on your keyboard when you were dragging out the wall, it might be slightly off-angle. You can open the wall's specification dialog and look at the angle value to see if this is the case, and if so, change it to the closest full angle. Maybe also check your wall connections in that area.