Automation Error: :"Object reference not set to an instance of an

[Guest]

I'm doing a server side automation(I know it's bad but..) and its working
fine locally and when accessing it from a remote machine using web browser is
was giving me this error"Retrieving the COM class factory for component with
CLSID
{000209FF-0000-0000-C000-000000000046} failed due to the following error:
80070005". so I configured the server using dcomcnfg as described in this
link:
http://support.microsoft.com/kb/288368/
and know this error now is gone but I'm having this error:"Object reference
not set to an instance of an object." when it comes to the last line of this
code:

Word.Application wrdApp;
Word._Document wrdDoc;
wrdApp = new Word.Application();
wrdDoc = wrdApp.Documents.Add(ref oName, ref oFalse,
ref oMissing, ref oMissing);
wrdDoc.Select();

 

[Guest]

It's suggesting that wrdDoc is null.

 

[Guest]

So, why it's woking when I run it in local machine that contain the project,
the problem comes only when I run it from a remote machine!!!?