Installation error on Jahia 5.0 Beta 2

Dear All,

I am new in Jahia and just wanna know much in order to help my developer job. However, I have tried serveral times to install Jahia 5.0 Beta 2 and get the same error message as folows. Can anybody tell me where is wrong and how to correct it. Thank in advance.

Jack Hsu

type Exception report

message 

description The server encountered an internal error () that prevented it from fulfilling this request.

exception 

javax.servlet.ServletException: Servlet.init() for servlet Jahia threw exception
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
	org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
	org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
	org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
	org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	java.lang.Thread.run(Thread.java:534)

root cause 

org.springframework.context.ApplicationContextException: I/O error parsing XML document for application context [org.springframework.context.support.ClassPathXmlApplicationContext;hashCode=7118534]; nested exception is java.io.FileNotFoundException: class path resource [spring] cannot be resolved to URL because it does not exist
	org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:94)
	org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:262)
	org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:111)
	org.jahia.hibernate.manager.SpringContextSingleton.init(SpringContextSingleton.java:50)
	org.jahia.bin.Jahia.init(Jahia.java:419)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
	org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
	org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
	org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
	org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	java.lang.Thread.run(Thread.java:534)