And today I helped a member of our group to build a bridge model with navigator. it seems that the import would be fullfilled even if the link element and nonprismatic section could exist without being used in model.However When I cancel the definition of link element and nonprismatic section.the import is failed with the following message:
Index exceeds matrix dimensions.
Error in PlotModel (line 103)
Error in LoadModel (line 161)
Error in LoadModel (line 81)
Error while evaluating PushTool ClickCallback