ASAN:SIGSEGV
=================================================================
==5668== ERROR: AddressSanitizer: SEGV on unknown address 0x000000000018 (pc 0x0000011ef0ab sp 0x7fff08e911f0 bp 0x7fff08e91200 T0)
AddressSanitizer can not provide additional info.
    #0 0x11ef0aa in Ms::Staff::show() const /home/antonio/MuseScore/libmscore/staff.cpp:800
    #1 0x1232b8b in Ms::System::scanElements(void*, void (*)(void*, Ms::Element*), bool) /home/antonio/MuseScore/libmscore/system.cpp:1001
    #2 0x118904c in Ms::Page::scanElements(void*, void (*)(void*, Ms::Element*), bool) /home/antonio/MuseScore/libmscore/page.cpp:400
    #3 0x118af58 in Ms::Page::doRebuildBspTree() /home/antonio/MuseScore/libmscore/page.cpp:586
    #4 0x11866f3 in Ms::Page::items(QRectF const&) /home/antonio/MuseScore/libmscore/page.cpp:148
    #5 0x8f13cb in Ms::ScoreView::paint(QRect const&, QPainter&) /home/antonio/MuseScore/mscore/scoreview.cpp:1893
    #6 0x8ef647 in Ms::ScoreView::paintEvent(QPaintEvent*) /home/antonio/MuseScore/mscore/scoreview.cpp:1678
    #7 0x7f26e998280f in ?? ??:0
    #8 0x90619f in Ms::ScoreView::event(QEvent*) /home/antonio/MuseScore/mscore/scoreview.cpp:4003
    #9 0x7f26e994bb53 in ?? ??:0
    #10 0x7f26e994efe5 in ?? ??:0
    #11 0x7f26eb70edd3 in ?? ??:0
    #12 0x7f26e997f6ea in ?? ??:0
    #13 0x7f26e9957d98 in ?? ??:0
    #14 0x7f26e99777dd in ?? ??:0
    #15 0x7f26e9982bde in ?? ??:0
    #16 0x7f26e9a9f86a in ?? ??:0
    #17 0x7f26e994bb53 in ?? ??:0
    #18 0x7f26e994efe5 in ?? ??:0
    #19 0x7f26eb70edd3 in ?? ??:0
    #20 0x7f26eb711688 in ?? ??:0
    #21 0x7f26eb758ed2 in ?? ??:0
    #22 0x7f26e3964d52 in ?? ??:0
    #23 0x7f26e396509f in ?? ??:0
    #24 0x7f26e3965163 in ?? ??:0
    #25 0x7f26eb759313 in ?? ??:0
    #26 0x7f26eb70db6a in ?? ??:0
    #27 0x7f26eb711bbd in ?? ??:0
    #28 0xacae77 in main /home/antonio/MuseScore/mscore/musescore.cpp:4916
    #29 0x7f26e532876c in __libc_start_main /build/buildd/eglibc-2.15/csu/libc-start.c:226
    #30 0x8a5648 in _start ??:0
==5668== ABORTING