Using Grails 2.4.2 and Spring Security Plugin 2.0-RC4
I wanted to customize the login page but could not find the login.gsp file anywhere. I searched and found references but none of them seemed to be correct for my development system. But a quicker solution was to just copy the login.gsp file from the gitHub repository of this plugin and place it in my project at grails-app-name/views/login/login.gsp. Now I was free to edit how I wanted.