I have problems in word automation

[Roshanakak]

Hi, I'm doing some Microsoft Word automation using Microsoft.Office.Interop.Word namespace, in this application i'm opening a file (template.docx) and making some changes in it and then saving it. Just when the file is going to be opened: myWordDoc = myWordApp.Documents.Add(ref filename, ref missing, ref missing, ref missing); i receive this exception: Word was unable to read this document. It may be corrupt. Try one or more of the following: * Open and Repair the file. * Open the file with the Text Recovery converter. but i'm sure the file is not corrupt, i can open it in word and its data is correct. Whould anyone please tell me what should i do now??? Thanks in Advance Roshanak