Symptoms

Smartforms coverted into a PDF file contains the following error:
Server Error
ID3206: A SignInResponse message may only redirect within the current web application: ''Runtime PDF URL]' is not allowed
 

Diagnoses

Smartforms coverted into a PDF file contains the following error:
Server Error
ID3206: A SignInResponse message may only redirect within the current web application: ' Runtime PDF URL]' is not allowed
 

Resolution

Set Anonymous Authentication as per: http://help.k2.com/onlinehelp/K2smartforms/ICG/current/default.htm#Anonymous_Access.html