Deployer Error Failed to retrieve object from source MWS

Hi,

I been able to deploy portlets, shells, roles, packages, etc using the deployer in webMethods 7.1.2

But there is one Shell that is giving me this error:

Failed to retrieve object from source MWS: id=Shell, type=MPRPreAuthShell, error=null

Also, is there a problem/bug with the deployer that keeps asking for the user & password on each post?

What could be wrong with that shell?

Thanks,