Added handling of error condition
Added handling of error condition

jtorresfabra/osg,tomasthoresen/osg,scrawl/osg,marchelbling/osg,openscenegraph/osg,marchelbling/osg,scrawl/osg,jtorresfabra/osg,marchelbling/osg,openscenegraph/osg,scrawl/osg,jtorresfabra/osg,openscenegraph/osg,openscenegraph/osg,tomasthoresen/osg,marchelbling/osg,tomasthoresen/osg,scrawl/osg,jtorresfabra/osg,tomasthoresen/osg