When trying to add a face fillet with hold line between two spline basedlofts I get the preview to show, but then it fails with rebuild errors when I try to implement it. I have tried it as shown in the attached image.I have tried it also by having just half of each loft, thinking that the troublemight be with the fillet going all the way around. I have also tried it by constructing a trim in the bottom of the large piece and then usinga face fillet with two hold lines with curv. cont. chosen, but no way I have triedhas worked. They all show the fillet in the preview, then fail. Any idea? Thanks in advance.