I have MSDE SP3 and the only thing that I have changed recently is my Windows login Password. In the Enterprise Manager the SQL server is registered using mixed authentication.

When I try to open any DTS in Design mode, I get a error dialog with the title 'DTS Design error' and saying that
"Error occured during creation of a DTS package"

and then when I click on the OKAY button I get the 2nd error dialog saying:
"The selected package cannot be opened. The DTS designer has been closed."

Can someone please help me out here.