Could not open Sharepoint 2010 files from Office on Windows Server 2008

On a Windows 2008 server when you try to open a document from a SharePoint Server 2010 environment you get an error message instead of the document opening.

Browser Error: Could not open

ULS Error:

w3wp.exe (0x1424) 0x16B8 Office Web Apps Office Web Apps Debug Assert 979h Unexpected ASSERTION FAILED: TAG '979h'  IN d:\office\source\msoutilstat\src\kjmod.cpp line 1225  Could not load library 'DavClnt.DLL' (error 126) 

The DAV redirector is not enabled by default on a Windows 2008 server.

You need to add the "Desktop Experience" feature using Server Manager to get this.

The WEBDAV Redirector is off by default on Windows Server.  This is required to use the CFD in order to access DAV and Cobalt servers.  To turn on the WEBDAV Redirector the Desktop Experience must be installed on the server.  To install the WEBDAV Redirector follow the steps outlined in this article: http://technet.microsoft.com/en-us/library/cc772567.aspx