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during the installation of the material library i get an error message it reads Error 1311. Source file not found: C:\Autodesk\AutoCAD_2011_English_Win_32bit\supportADSKMaterials\ILL\Common~1.cab. Verify that the file exists and you can access it. then i have an option to retry or cancel. nothing happens when i retry even after i opened the file.
It could be a corrupt installation source, please try to download it again.
Or try the installation in diagnostics mode.
http://usa.autodesk.com/getdoc/id=TS75218