Void Sweep Error Message

[cvn_imtiaz]

I am trying to create chamfered edges on a roof curb. Due to the sloped roof, I need to use two different profiles to make the curb uniform. However, when I attempt to create a void sweep, similar to the one I successfully created on the bottom roof (green color), I encounter an error message: "There is a circular chain of references among the highlighted elements."

Kindly check the attached file for reference. 

[KrisAribal]

I can't view the file since I'm still using 2024  and not the latest 2025 version. But do you create those roof curb with the sloped roof as the host plane? If so, then have you tried to create a reference plane to host that void sweep?

[jay_colcombe]

Would it not be easier to use Slab Edges, as these can use Profiles and add Generic Model or In-Place Models for capping ends?

Or either use a Roof then Gutter and Soffits, again you can use profiles which can be adjusted into place