Unsupported Principal type in Authentication. Skipping auto-registration

[Rout Biswajit]

Hi,

I am using Roller 4.0 version and I am facing problem in Auto-Registration.

I am getting "Unsupported Principal type in Authentication. Skipping 
auto-registration" in my log file.

Please provide me a solution for this.

Regards,

Biswajit.