Crash when changing "spanned staves" from 2 to 1 in the Inspector
In the attached file (Barline_Crash.mscz) I have changed all barlines to "Mensurstriche" following the procedure as specified in the online Help manual. If I now select any one of the barlines (for example the final barline between stave Soprano and stave Alto) and then try to reduce the value of the parameter "Spanned staves" to 1 (either by typing the value directly into the window or by clicking the down arrow), there is a short delay (beachball spinning) and then MuseScore crashes.
I use the MuseScore 18.104.22.168 on a mac OS Sierra (v. 10.12.2).
GIT commit: 6347ed6