My dormer roof and main roof are joined. Toggeling between views : attic plan, roof plan, 3d. ( I have to pick the line where the dormer and main roof meet in the 3-d view, all other surfaces to cut with can be selected in either roof plan or attic plan). When i have all the cutting surfaces selected i perfom the cut and get a warning that there is a circular reference detected and no cut is perfomed.
any ideas?
what could be the circular reference?