From Luc Frauciel, "In 3ds plugin, asGeometry() is used on a drawable but the resulting pointer is not tested for nullity.

It leads to a crash when writing osgText::Text or Shapes"

src/osgPlugins/3ds/WriterNodeVisitor.cpp

@@ -836,7 +836,7 @@ WriterNodeVisitor::calcVertices(osg::Geode & geo)
     for (unsigned int i = 0; i < geo.getNumDrawables(); ++i)
     {
         osg::Geometry *g = geo.getDrawable( i )->asGeometry();
-        if (g->getVertexArray()) numVertice += g->getVertexArray()->getNumElements();
+        if (g!=NULL && g->getVertexArray()) numVertice += g->getVertexArray()->getNumElements();
     }
     return numVertice;
 }