This is a Windows 7 32 system.
An application opens Word 2010 and the User pulls up a letter from a folder in c:/Program Files/[program]/etc./etc./xyz.doc
A letter doc shows up (in Compatibility Mode) as a Preview I believe.
The ribbon highlight is not on File but something else.
Clicking on File, in order to Save or Save As doesn't do anything.
Clincking on the floppy disk icon to Save doesn't do anything.
Turning off UAC fixes the immediate problem.
This has not been encountered on other computers configured the same way with the same programs, etc.
The folder that the document is in is marked Read Only but that doesn't hamper anyone else.
I'd like to turn UAC back on but don't really know where to go next.