Hi @reggie.harrison
The year for Inventor and Inventor Nastran must be the same. To download software, go to ava.autodesk.com. Either type in that you want to download, or use the Quick Link at the top and choose Download Autodesk Products.
John Holtz, P.E. Global Product Support
Autodesk, Inc. If not provided, indicate the version of Inventor Nastran you are using.If the issue is related to a model, attach the model! See What files to provide when the model is needed.
