Pre-Processing
Wrong damping input can be used: When an analysis is re-run, the wrong damping value can be used for the analysis. If the damping value is changed in a new analysis, and then the original analysis is re-ran, the damping from the new analysis is used.
Unable to edit the model from the Inventor model tree: When Inventor Nastran is opened, it is not possible to edit the model from the Inventor Model tree.