https://forums.autodesk.com/t5/installation-licensing-forum/inventor-2016-prdsu-cannot-find-cab-file/m-p/5598839#M144268 What happens if you try to retry? Have you tried running the MSI in the location? Does it allow you to install?<BR /><BR />You could follow the uninstall/reinstall instructions for an earlier library, see if that works... <A href="http://knowledge.autodesk.com/support/inventor-products/troubleshooting/caas/sfdcarticles/sfdcarticles/How-to-uninstall-and-reinstall-Autodesk-Material-Library.html" target="_blank">http://knowledge.autodesk.com/support/inventor-products/troubleshooting/caas/sfdcarticles/sfdcarticles/How-to-uninstall-and-reinstall-Autodesk-Material-Library.html</A> Sun, 19 Apr 2015 14:30:00 GMT ukdxb012 2015-04-19T14:30:00Z