Thanks Hamit.
Below is answers to the questions you suggested:
1- Have you any Antivirus program?
Yes. Symantec Antivirus & client firewall
2- Are you using Exchange Server?
No. We use LotusNotes email client or MS Outlook. (Not sure what you mean by exchange server) But we don't communicate with any exchange server through Add-Ins
3- This module is an AddIn region?
Yes. The problem that we are facing is with the AddIn code.(If that's what you mean)
4- Is it a trusted application? (you can try to uncheck any specified security access control)?
No security access control is specified in Word.
5- How are you tried my suggest, (you should use save method in the tick event)?
Yes we did & it doesn't work. Somehow, the ActiveDocument.Save() fails in the second consecutive invokation. Then on, it exists silently wothout even saving the document or showing any error. ANd after that when you close the document error 5487 occurs.
6- How is range formatting is it unspessified?
We don't use any range formatting as we understand. So, the answer would be unspecified. But we are not sure.
Hamit, please guide us further with your spontaneous thoughts on the same.
Greatly appriciate your help in this.
Thanks,
~Noor