Strange issue here. I have a sec:ifNotLogged in tag in my template gsp, and it fails with the error/stack trace below. However, if I remove the tag so that I can log in, then add it back after I'm logged in, it works fine. I have a plugin that extends the Spring Security plugin to add a REST authentication provider, but the same configuration worked on Grails 2.3.8 and Spring Security 2.0RC2.
Caused by GroovyPagesException: Error evaluating expression [SpringSecurityUtils.securityConfig.apf.filterProcessesUrl] on line [46]: Cannot get property 'securityConfig' on null object
->> 46 | doCall in /grails-app/views/layouts/main.gsp
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Caused by NullPointerException: Cannot get property 'securityConfig' on null object
->> 46 | doCall in Users_dustin_Documents_svn_Company_svn_trunk_app_grails_app_views_layouts_main_gsp$_run_closure2_closure26_closure51
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| 145 | doCall in grails.plugin.springsecurity.SecurityTagLib$_closure7
| 57 | doCall . in Users_dustin_Documents_svn_Company_svn_trunk_app_grails_app_views_layouts_main_gsp$_run_closure2
| 101 | run in Users_dustin_Documents_svn_Company_svn_trunk_app_grails_app_views_layouts_main_gsp
| 198 | doFilter in grails.plugin.cache.web.filter.PageFragmentCachingFilter
| 63 | doFilter in grails.plugin.cache.web.filter.AbstractFilter
| 53 | doFilter in grails.plugin.springsecurity.web.filter.GrailsAnonymousAuthenticationFilter
| 49 | doFilter in grails.plugin.springsecurity.web.authentication.RequestHolderAuthenticationFilter
| 82 | doFilter in grails.plugin.springsecurity.web.authentication.logout.MutableLogoutFilter
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 744 | run in java.lang.Thread
User error. Reference to the old package for SpringSecurityUtils in the template within the body of the tag.