Dragging breaks & spacers in an empty space in a score with hidden empty staves causes a crash
MuseScore 2.0.2 / Windows 7
1) Create a score for two instruments (eg 2 flutes),
or open this file (piano + acoustic bass): score piano-bass.mscz
2) Style ->General
3) Tick "Hide Empty Staves"
4) Untick "Don't hide empty staves in the first system" -> Ok
First result: you receive as expected a blank page
5) From the Breaks & Spacers palette, drag anywhere (and drop, not necessary) a break page on this page.