sloped glazing bug?

[patricks]

I'm trying to create a standard 20' x 20' pyramid skylight, with 6:12 sloping sides and vertical mullions every 5 feet. I insert gridlines at 5 ft. intervals, but then when I try to put a mullion on the middle grid line (the one touching the peak) I get one of those "a serious error has occured" messages.

I'm attaching an image of what I made, with all the mullions except the middle one on each side. I used a rectangular mullion along the bottom edge and on the sides (faces) of the skylight, and a 5x5" quad corner mullion at the ridge lines. I tried using a rectangular, a square, and a circular mullion on the middle grid lines, but all give me the same error message. Any thoughts as to how to get a mullion to go in there?

[patricks]

nobody knows? :(

another issue is the mullion joins at the corners. The 4 ridge mullions (corner mullion types) join very nicely at the peak, but down around the corners at the bottom edges, the joins look pretty sloppy between the corner mullion and the 2 rectangular mullions that come together at that corner. Any ideas for that?