Language switch fails in RD session and shortcut menu is not displayed in RemoteApp session in Windows 7 SP1 or Windows Server 2008 R2 SP1
http://support.microsoft.com/kb/2847932
http://support.microsoft.com/kb/2847932
How to resolve the problem "Word experienced an error trying to open the file" when opening a Word 2007/2010 file (Easy Fix Article)