RemovableManager on OSX: Testing for dictionary values for nullness. Hopefully it fixes Can not start slicer on mac Bigsur #5719
RemovableManager on OSX: Testing for dictionary values for nullness.
Hopefully it fixes Can not start slicer on mac Bigsur #5719

prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r