VFP Word Application OLE Errors

I have a VFP-9 application on a network of about 10 users that uses a Word Application object to perform a mail merge, update a mail-merge document, print it and save it to a NEW document. The users select a master mail-merge document from a folder of documents and then process the merge-print-save. The data source for the mail-merge is a CSV file that is stored on each users local hard-drive. This CSV file is updated before each merge.
 
Very often error #1429 OLE IDispatch exception code 0 from Microsoft Word: is issued.
After the above message it says Requested object is not available... 
-OR-
This file is read-only.  (F:\COLLECT\DOCS\51 CORP DEMAND.doc) [the master documents name
-OR-
Word cannot save this file because it is already open elsewhere.  (F:\DEBTOR-DOCS\...\MEM-PBD-SETTLE.doc) [the NEW document in a different directory]

The #1429 error message has been issued with Requested object is not available... even when no other programs are running on the workstation and no other users are logged in.

Everything works in testing and sometimes, it also works in the live environment. It almost seems that a document and/or the Word object is being left open, but I ran it with the Processes page on the Windows Task manager open and I could see Winword open and then close.

The code is below.

Users are running VFP-9 (compiled EXE application), Windows-XPP, Word-2003.

Any help would be greatly appreciated.

Also, does anyone know of a GOOD source for VFP Office Automation, as every time I need to use it I end up winging it (very time consuming).

Thank you all.

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* Create/Update CSV file for Letters
Thisform.BldLett()
 
M_DocName = CLDocs.DocName
M_DocLoc = CLDocs.DocLoc
 
* Build Debtor Documents folder if not exist
IF NOT DIRECTORY(sys(5)+"\DEBTOR-DOCS\"+ALLTRIM(M_CLFILE))
  MD sys(5)+"\DEBTOR-DOCS\"+ALLTRIM(M_CLFILE) 
ENDIF 
 
* Mailmerge and print Letter
 oword = CreateObject("Word.Application")
 
* APPLICATION.OLERequestPendingTimeout = 0   		&& 0 means no busy error message
 
*** The previous line removes the switch-to error message if busy. Caused by word print dialog box being displayed
*** at the same time another item on the screen is clicked, creating a conflict. Activate line by removing *.
* APPLICATION.OLERequestPendingTimeout = 0   && 0 means no busy error message
 
     WITH oword
 
      .Documents.Open(sys(5)+ALLTRIM(M_DocLoc)+ALLTRIM(M_DocName)) 
 
      .Visible = .F.
  
      .ActiveDocument.MailMerge.Destination = 0 && new document.
      .ActiveDocument.MailMerge.Execute         && Run the merge.
           
      .Dialogs(88).show()   && Open Print dialog box in Word.
 
      .ActiveDocument.SaveAs(sys(5)+"\DEBTOR-DOCS\"+ALLTRIM(M_CLFILE)+"\"+ALLTRIM(M_DocName))
 
      .Documents.Close          
      .Application.Quit
      
     ENDWITH