curtain wall mullions

[bd04]

just a couple of questions on mullions

how do i get a corner mullion to clean up at the intersection with a wall
i've tried using different types but it gives me an error message "Can't create Corner Mullion due to the angle between the neighboring panels"?

When changing from Trapezoid corner mullions to Quad corner mullions the mullion offsets itself but won't allow me to change depth dimensions

thanks

[Mr Spot]

You'll need to navigate through your mullions first and create one without offsets and edit the leg1 and 2 dimensions so it can create the instance... The lengths at the moment are too short for revit to create the element...