Selecting Lines palette palette causes crash

Selecting Linea palette from master palette or (advanced) workspace cause crash

Result: Crash

Windows 7, self-built from f06217b

stack trace:
1 std::vector::begin stl_vector.h 557 0xe28dfc
2 std::vector::rend stl_vector.h 611 0xe28db5
3 Ms::System::lastMeasure system.cpp 828 0x7e10e6
4 Ms::SlurSegment::layoutSegment slur.cpp 557 0x83a2f9
5 Ms::Slur::layout slur.cpp 1307 0x83dacd
6 Ms::Palette::paintEvent palette.cpp 912 0x4b3a4c
7 ZN7QWidget5eventEP6QEvent 0x1bfade01
8 ?? 0x233403d0
9 ?? 0x5e5b5cc4
10 ?? 0x4c25d5f