Problems with 'true_user'

After upgrading the pretender changes, I am having problems with the app finding the true_user object. I tried to trace it but I cannot find where the error might come from. Any help is appreciated. This error is shown when I try to access the jumpstart config wizard.

works fine for me , in exactly the same place.  Are you sure you have the gem installed?  without it, `true_user` would in fact be an undefined local variable .

Rodolfo Ruiz    true_user variable is defined only when current_user is defined

therefore it returns undefined at /jumpstart 

try <% if current_user && current_user != true_user %>