EDUMAX

In some cases we are receiving the error text:
'Retrieving the COM class factory for component with CLSID
{000209FF-0000-0000-C000-000000000046} failed due to the following error:
80071b5f'

From the line of code in in C#:
Microsoft.Office.Interop.Word.Application myApp = new
Microsoft.Office.Interop.Word.Application();

Any have any ideas what this error means ? It happens intermittently in a
production system within our line-of-business document generation system.

The CLASSID is for the 2003/11.0 version of the application class, but what
does this COM Error code relate to ? I can't find it on google or MSDN.