I wanted post that I have found the solution to the problem on Autodesk's discussions boards so there is not need for anyone to reply.
The solution is as noted by andywatson:
"Re: Workspace Saveas--Failed to load resources from resource file
This error only occurs when the user has not yet defined any personal workspaces in his/her Main CUI (custom.cui). After creating a new workspace in the Main CUI by right-clicking the Workspaces node and selecting "New", or by dragging an existing workspace from the enterprise Workspace node to the Main's, selecting "SaveAs..." from the drop-down list in the Workspaces toolbar works as advertised. "
The URL to the full thread on Autodesk site is
http://discussion.autodesk.com/threa...sageID=4965910.
Tony