Undefined License ( Install Type = 0 )

Can anyone tell me what an Undefined License is - Is this another example of a corrupt license ? ( RhinoScript InstallType = 0 ).

I have 2 recent installs of my plugin where the user has an Undefined Rhino License.

Regards,
Keith

Without the serial number of license key, I cannot confirm. But the user may be running a cracked copy of Rhino.