Need help with following deployment- Trying to install jbpm-designer-standalone-6.3.0.Final.war with tomcat7. on startup getting following error:

SEVERE: Exception starting filter UI Security Filter java.lang.NullPointerException at org.picketlink.authentication.web.AuthenticationFilter.resolveAuthenticationScheme(AuthenticationFilter.java:182) at org.picketlink.authentication.web.AuthenticationFilter.init(AuthenticationFilter.java:83) at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:279) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:105) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4841) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5535) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1095) at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1930) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745)  Oct 05, 2015 11:42:22 PM org.apache.catalina.core.StandardContext startInternal SEVERE: One or more Filters failed to start. Full details will be found in the appropriate container log file Oct 05, 2015 11:42:22 PM org.apache.catalina.core.StandardContext startInternal SEVERE: Context [/jbpmweb] startup failed due to previous errors

I tried commenting out following line in web.xml file :

<filter> <filter-name>UI Security Filter</filter-name>  <filter-class>org.picketlink.authentication.web.AuthenticationFilter</filter-class>  <init-param> <param-name>authType</param-name> <param-value>org.jboss.errai.security.server.FormAuthenticationScheme</param-value> </init-param> <init-param> <param-name>form-login-page</param-name> <param-value>/login.jsp</param-value> </init-param> <init-param> <param-name>host-page</param-name> <param-value>/designer.html</param-value> </init-param> <init-param> <param-name>forceReAuthentication</param-name> <param-value>true</param-value> </init-param> </filter>  <filter-mapping> <filter-name>UI Security Filter</filter-name> <url-pattern>/designer.html</url-pattern> <url-pattern>/uf_security_check</url-pattern> <url-pattern>*.erraiBus</url-pattern> <url-pattern>/org.jbpm.designer.jBPMDesigner/*</url-pattern> </filter-mapping>

Installation preceeds without any error and I can access login page but now authentication does not work. Seems something related to designer authentication,how can I remove this authentication and use designer directly.

Thanks in advance.