jcf wrote:To me it seems as if it had to do with something deep inside FreeCAD that has changed, as the error statements include mentions of edges, lines, curves ...
Even if I try to get a contour path for a simple box, it doesn't work.
Which version do you use?
OS: "openSUSE Leap 42.2"
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.17.9940 (Git) (Packman)
Build type: Release
Python version: 2.7.12
Qt version: 4.8.6
Coin version: 4.0.0a
OCC version: 6.9.1.oce-0.18-dev
i got a countour path, also if i use a file which is made with FreeCAD 0.16 (but also checked only a few simple parts)