I sent a sis file for Express Signed, it was signed successfully but cannot be installed. I get a "Certificate Error".

I suspect it has something to do with the New Smart Installer that Nokia introduced. I submitted the application_installer sis file for signing. The application sis file is "wrap" inside the smart installer and it seems that the signing is not done properly.

I have emailed symbian.signed@nokia.com but it seems that they are not able to resolve this issue themselves.

Very disappointed. Hope someone can shed some light.