Text_spanner::do_substitute_dependency (Score_element* o, Score_element*n)
{
if (support_span_l_ == o)
- support_span_l_ = (Directional_spanner*) (n?n->access_Spanner ():0);
+ support_span_l_ = (Directional_spanner*) (n?dynamic_cast <Spanner *> (n):0);
}