Hello there; Did you download and install the new version 8.62? Your two main beams appear to be deficient in version 8.62 where the roof braces are not modeled. There is no problem with your other members. When modeling roof lanterns, use steel beams for vertical members instead of using the steel column command. You can get more suitable results for system setup. Considering that roof lanterns are not the main structural elements, if you model in this way, you are not making a fully appropriate engineering acceptance. If you want it to be included in the analysis because it is a secondary element, you can model it with a steel beam as I mentioned, or you can only enter the roof lanterns as loads during analysis and design. Modeling can be performed for drawings. Good work.