Authentication error cas 3.5.1 - alfresco 4.2.b

[murdock45]

Hi guys
I am making an installation of various components, including alfresco-community platform on ubuntu 12.04.1 and am stuck for days, i can't understand how to intervene in order to solve this problem, keep in mind that i'm a and therefore I do not and not compiling java classes. My integration is the following: apache 2.2.22 , Tomcat7.0.32 , cas server 3.5.1 , cas client 3.2.1 , alfresco community 4.2 .b, openldap-2.4 .28
alfresco dining and deploy under tomcat, to access you must pass through the cas, so far, so good, the cas called ldap, previously the synchronization of the ldap users with alfresco dining and correctly,
The problem is when I am about to go on the login page of the platform, the error is the following and if someone can give me some information i would be of great help. Thanks 1000

SEVERE: Servlet.service() for servlet [Faces Servlet] in context with path [/alfresco] threw exception [Filter execution threw an exception] with root cause
java.lang.NoSuchMethodError: org.alfresco.web.app.Application.getLanguage(Ljavax/servlet/http/HttpSessionLjava/util/Locale;
at info.intix.alfresco.CasAuthenticationFilter.setAuthenticatedUser(CasAuthenticationFilter.java:208)
at info.intix.alfresco.CasAuthenticationFilter.doFilter(CasAuthenticationFilter.java:137)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.jasig.cas.client.validation.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:201)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.jasig.cas.client.authentication.AuthenticationFilter.doFilter(AuthenticationFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:200)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)

[murdock45]

Perhaps this may be an issue?
https://issues.alfresco.com/jira/browse/ALF-12277