I had a similar problem and I was able to resolve it. I am glad to provide the procedures that I followed that solved the issue.
1) UNINSTALL THE AUTODESK 2017 MATERIAL LIBRARY
I know the material library is not installed, but some contents of it are registered in the program files. The best way to full uninstall such contents is by:
Open the Autodesk Uninstall Tool: C:\Program Files (x86)\Common Files\Autodesk Shared\Uninstall Tool\R1\UninstallTool.exe
Then uninstall all Autodesk Material Library 2017
2) ACCESS THE AUTODESK EDUCATIONAL FREE SOFTWARE
One major thing that I realised is that, installing directly (Install now) from the website installed successfully Autodesk Revit but not the library, instead, ensure you choose the option of DOWNLOAD NOW. This will use the Autodesk download manager, with this, all content of the installation will be downloaded. After the installation is completed, then open and install, the material library will be successfully installed
NB: Do not download using BROWSER DOWNLOAD option, this will not download all the installation files.
I hope this is helpful?