PSEMAgent Error

Hi,


I am getting error when i am starting PSEMAgent in windows server. Error as below:

E:\PT8.51\PSEMAgent>StartAgent.bat
Exception in thread "main" java.lang.NullPointerException
        at java.util.StringTokenizer.<init>(Unknown Source)
        at java.util.StringTokenizer.<init>(Unknown Source)
        at com.peoplesoft.pt.environmentmanagement.agent.Agent.invokeCrawler(Agent.java:1502)
        at com.peoplesoft.pt.environmentmanagement.agent.Agent.startRecrawlProcess(Agent.java:1212)
        at com.peoplesoft.pt.environmentmanagement.agent.Agent.<init>(Agent.java:385)
        at com.peoplesoft.pt.environmentmanagement.agent.Agent.analizeInputParams(Agent.java:1855)
        at com.peoplesoft.pt.environmentmanagement.agent.Agent.main(Agent.java:1998)