MuseScore crashes on import of MusicXML file exported from Sibelius
Mac OS X El Capitan 10.11.6
Musescore 2.1 and Musescore Nightly Release 9318917
Crash dump attached.
Attached and renamed .txt as your form doesn't allow uploading of .crash
I will try and open with a generic xml editor and see if it reports any errors.
Both .xml(1.7Mb) and .mxl(54kb) files for the same score crash musescore.
Attached the .mxl file