VM Regions Near 0x28:
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    __TEXT 10c2e0000-10c2f0000 [ 64K] r-x/r-x SM=COW /usr/local/Cellar/freecad/HEAD-ae0a315/FreeCAD.app/Contents/MacOS/FreeCAD

Thread 0 Crashed:: CrBrowserMain Dispatch queue: com.apple.main-thread
0 libc++.1.dylib 0x0000000111d6ed52 std::__1::istreambuf_iterator<char, std::__1::char_traits<char> > std::__1::num_get<char, std::__1::istreambuf_iterator<char, std::__1::char_traits<char> > >::__do_get_signed<long>(std::__1::istreambuf_iterator<char, std::__1::char_traits<char> >, std::__1::istreambuf_iterator<char, std::__1::char_traits<char> >, std::__1::ios_base&, unsigned int&, long&) const + 50
1 libc++.1.dylib 0x00007fff2033bdd0 std::__1::basic_ostream<char, std::__1::char_traits<char> >::operator<<(int) + 272
2 libTKBRep.7.dylib 0x000000017db6b05e TopTools_ShapeSet::Write(TopoDS_Shape const&, std::__1::basic_ostream<char, std::__1::char_traits<char> >&) const + 110
3 Part.so 0x000000017b9eae48 Part::PropertyPartShape::SaveDocFile(Base::Writer&) const + 446
4 libFreeCADBase.dylib 0x000000010d86c06c Base::ZipWriter::writeFiles() + 96
5 libFreeCADApp.dylib 0x000000010d3861a0 App::Document::saveToFile(char const*) const + 1042
6 libFreeCADApp.dylib 0x000000010d385b70 App::Document::save() + 978