"Create score" plugin crash

In r1923 on windows, or in mac beta r1914, clicking Plugin -> Create score leads to a crash.
A mac user reported on the mailing list the following trace.

0 net.sourceforge.mscore 0x001057a0 Measure::setEndBarLineType(int, bool, bool, QColor) + 0
1 net.sourceforge.mscore 0x000460b0 Score::appendMeasures(int, int) + 532
2 net.sourceforge.mscore 0x0029ffbc ScScorePrototype::appendMeasures(int) + 148
3 net.sourceforge.mscore 0x00015fbc ScScorePrototype::qt_metacall(QMetaObject::Call, int, void**) + 624
4 QtScript 0x01d1bb9c QScriptValue::construct(QScriptValue const&) + 33580