Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000010
Exception Note:        EXC_CORPSE_NOTIFY

VM Regions Near 0x10:
--> 
    __TEXT                 000000010b8fb000-000000010b90f000 [   80K] r-x/rwx SM=COW  /work/*/mapItemTest.app/Contents/MacOS/mapItemTest

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libdeclarative_location.dylib 	0x0000000112c082ab QDeclarativeGeoMapItemView::itemModelDataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) + 459
1   org.qt-project.QtCore         	0x000000010bc2ee30 QMetaObject::activate(QObject*, int, int, void**) + 880
2   org.qt-project.QtCore         	0x000000010bcc69ad QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) + 61
3   com.yourcompany.mapItemTest   	0x000000010b9022ba ClusterableModel::doRecalculation() + 1034 (clusterablemodel.cpp:125)
4   com.yourcompany.mapItemTest   	0x000000010b901865 ClusterableModel::recalculateClusters() + 69 (clusterablemodel.cpp:140)
5   com.yourcompany.mapItemTest   	0x000000010b903633 QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (ClusterableModel::*)()>::call(void (ClusterableModel::*)(), ClusterableModel*, void**) + 131 (qobjectdefs_impl.h:501)