'<filename>' could not be found. Check the spelling of the file name, and verify that the file location is correct. If you are trying to open the file from your list of most recently used files on the File menu, make sure that the file has not been renamed, moved, or deleted.Problem machine Mac OSX running Office 2011
2 windows file servers, one running Windows 2003, the other 2008
Office files can be opened on the Windows 2003 shares but not on the Windows 2008 ones
All other files can be opened fine on the Windows 2008 server
So, I went to another Mac, running Office 2004 and it all works fine. I then looked at a third Mac running Office 2011 - this can open office files from both servers fine too.
I finally tracked the problem down to the way the shares had been mounted - as soon as I mounted the Windows 2008 share via AFP rather than SMB it all worked.
Note that the Windows 2003 shares work fine with Office 2011 mapped via SMB and the Windows 2008 shares work fine via SMB when using Office 2004,
So the problem was specifc to Office 2011 connecting to a Windows 2008 share via SMB
Connect to the share via AFP and you are good to go!