So I found this on the Autodesk Website: Product keys are required for installation of Autodesk products and are used to differentiate products that are both sold independently and as part of a product suite. Autodesk Auto Sketch 8 Driver Acer Aspire One Nav50 Windows 7. on this page. For example, installing AutoCAD 2013 as a point product requires product key 001E1, but installing AutoCAD 2013 from the Autodesk Product Design Suite Ultimate 2013 requires product key 781E1. The same version of AutoCAD is in both software packages but the product key differentiates one package from the other. So I did use the suite product key and installed with no issues.I googled for a half hour and could not come up with anything, but then I googled product keys for Autodesk and found that paragraph above. Perfect use of office time. Unity Pro Xl 4.1 Serial Number. So I found this on the Autodesk Website: Product keys are required for installation of Autodesk products and are used to differentiate products that are both sold independently and as part of a product suite. For example, installing AutoCAD 2013 as a point product requires product key 001E1, but installing AutoCAD 2013 from the Autodesk Product Design Suite Ultimate 2013 requires product key 781E1.