Man Of Miracles wrote:

I too have a similar problem - I checked something in my backup pst
file and now cannot get rid of the folder in outlook. The folder is
not visible when I open the mail profile. I would normally right
click and close pst, but when I do that I get the error - this
operation failed object not found. How can I remove this pst from my
file directory??!!

Sounds like your mail profile is corrupt. Start with a new one.
--
Brian Tillman [MVP-Outlook]