Error 1606: Could not access network location

[Autodesk]

When youÂ*performed an unattended installationÂ*using Group Policy Objects (GPO) or System Management Server (SMS), you received the following error message in the Windows Event Viewer or installation log file: Error 1606 Could not access network location

More... (http://usa.autodesk.com/adsk/servlet/ps/item?siteID=123112&id=8164400&linkID=2475323)