Although it will appear to compile, some part of your model will be missing because CGAL doesn't like it. If you flush the cache you should get the error. It won't happen again until that part of the model changes. On Sat, 16 Apr 2022 at 17:11, Trevor Orr via Discuss < discuss@lists.openscad.org> wrote: > > > > ---------- Forwarded message ---------- > From: Trevor Orr <fractorr@yahoo.com> > To: OpenSCAD General Discussion <discuss@lists.openscad.org> > Cc: > Bcc: > Date: Sat, 16 Apr 2022 16:10:54 +0000 (UTC) > Subject: [OpenSCAD] Error during compile > Any ideas what I could be doing wrong to generate this error? The > generation seems to complete fine though. I get this only once in a while > when changing parameters. I am running Windows 11 and OpenSCAD 2022.02.13 > > > Compiling design (CSG Products generation)... > ERROR: CGAL error in CGALUtils::applyUnion3D: CGAL ERROR: assertion > violation! > Expr: itl != it->second.end() > File: > /mxe/usr/x86_64-w64-mingw32.static.posix/include/CGAL/Nef_3/SNC_external_structure.h > Line: 1144 > > > > > > ---------- Forwarded message ---------- > From: Trevor Orr via Discuss <discuss@lists.openscad.org> > To: OpenSCAD General Discussion <discuss@lists.openscad.org> > Cc: Trevor Orr <fractorr@yahoo.com> > Bcc: > Date: Sat, 16 Apr 2022 16:10:54 +0000 (UTC) > Subject: [OpenSCAD] Error during compile > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org >