- vtkCellLinks *Links = grid->GetLinks();
- Links->ResizeCellList(myVtkID, 1);
- Links->AddCellReference(ME->getVtkId(), myVtkID);
+ if ( grid->HasLinks() )
+ {
+ vtkCellLinks *Links = grid->GetLinks();
+ Links->ResizeCellList(myVtkID, 1);
+ Links->AddCellReference(ME->getVtkId(), myVtkID);
+ }