google app engine - spring security 4.0.1 Invalid CSRF token found on GAE -

i trying use following project https://github.com/spring-projects/spring-security/tree/master/samples/gae-xml use spring security within gae context. in project no freemarker @ all, , goal allow user logged in gmail access application. in spring security 4.0.1 csrf default enabled. tried deploy app personal gae application , got following trace org.springframework.security.web.csrf.csrffilter dofilterinternal: invalid csrf token found http://xxx/_ah/queue/__deferre in log console. adding

<csrf disabled="true"/> 

in applicationcontext-security.xml remove error nonsense add line. if tried tutorial appreciate lot advice.