Hi,
I have this drawing, created in ADT 2004, when I run BO for Boundary, it always report "Valid hatch boundary not found"; same error when I open it in AutoCAD 2007. but in AutoCAD 2007, if I select all, copy and paste to new drawing, BO works fine.
so I think there must be something wrong, something relate the ADT.
also, if you delete red ARC, BO works fine.
Is there anybody have this problem, What should I do to make BO works.
Thank you,
Wes
Windows 10 64 bit, AutoCAD (ACA, Map) 2023