Error: The current node has not been started yet. Method PlatformAPI.startNode() must be called previously

Hi,
I have installed Subscriotion v7.2 of Bonitasoft with Ubuntu + OpenJDK + Tomcat + PostgreSQL configuration.
I have followed the steps as mentioned in : http://documentation.bonitasoft.com/ubuntu-openjdk-tomcat-postgresql-0

I am able to view the login page. But post login I receiver the error : "The current node has not been started yet. Method PlatformAPI.startNode() must be called previously."

Below is an extract from log
2016-03-01 15:45:26.683 +0530 org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/bonita].[loginService] org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [loginService] in context with path [/bonita] threw exception [org.bonitasoft.engine.platform.NodeNotStartedException: The current node has not been started yet. Method PlatformAPI.startNode() must be called previously.] with root cause
org.bonitasoft.engine.platform.NodeNotStartedException: The current node has not been started yet. Method PlatformAPI.startNode() must be called previously.
at org.bonitasoft.engine.api.impl.ServerAPIImpl.checkMethodAccessibility(ServerAPIImpl.java:287)
at org.bonitasoft.engine.api.impl.ServerAPIImpl.invokeAPIOutsideTransaction(ServerAPIImpl.java:278)
at org.bonitasoft.engine.api.impl.ServerAPIImpl.invokeAPI(ServerAPIImpl.java:270)
at org.bonitasoft.engine.api.impl.ServerAPIImpl.invokeMethod(ServerAPIImpl.java:124)
at org.bonitasoft.engine.api.impl.ClientInterceptor.invoke(ClientInterceptor.java:86)
at com.sun.proxy.$Proxy6.login(Unknown Source)
at org.bonitasoft.console.common.server.login.datastore.LoginDatastoreExt.login(LoginDatastoreExt.java:60)
at org.bonitasoft.console.common.server.login.datastore.UserLoggerExt.doLogin(UserLoggerExt.java:35)
at org.bonitasoft.console.common.server.login.LoginManager.login(LoginManager.java:65)
at org.bonitasoft.console.common.server.login.servlet.LoginServlet.doLogin(LoginServlet.java:187)
at org.bonitasoft.console.common.server.login.servlet.LoginServlet.doPost(LoginServlet.java:100)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:394)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.bonitasoft.console.security.SessionFixationValve.invoke(SessionFixationValve.java:77)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)