Not displaying RQM Login page

I have installed the RQM and ran the server .it is working for the first time and after the getting same error. I have un-installed and installed again but first time I am able to login and after that I am not able to view the RQM login Page mean 1st time only . pls find the error which I am getting in RQM log.
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17 May 2009 18:16:18,187 ERROR net.jazz.ajax.internal.Activator - A RuntimeException has occurred while starting the WebUI services
java.lang.NullPointerException
at net.jazz.ajax.internal.javascript.JavaScriptServiceImpl.registerApplication(JavaScriptServiceImpl.java:110)
at net.jazz.ajax.internal.registry.WebUIRegistryReader.registerApplication(WebUIRegistryReader.java:749)
at net.jazz.ajax.internal.registry.WebUIRegistryReader.start(WebUIRegistryReader.java:157)
at net.jazz.ajax.internal.Activator.addingService(Activator.java:61)
at org.osgi.util.tracker.ServiceTracker$Tracked.trackAdding(ServiceTracker.java:1064)
at org.osgi.util.tracker.ServiceTracker$Tracked.trackInitialServices(ServiceTracker.java:926)
at org.osgi.util.tracker.ServiceTracker.open(ServiceTracker.java:330)
at org.osgi.util.tracker.ServiceTracker.open(ServiceTracker.java:274)
at net.jazz.ajax.internal.Activator.start(Activator.java:46)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:999)
at java.security.AccessController.doPrivileged(AccessController.java:246)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:993)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:974)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:346)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:350)
at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1118)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:634)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:508)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:282)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:468)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:195)
at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:297)
17 May 2009 18:16:22,718 WARN ository.common.transport.AbstractElementDescriptor - The com.ibm.rqm.requirement.service bundle's plugin.xml uses the component id "com.ibm.rqm.requirement" as the prefix to a <configurationProperty> element's "name" attribute with the value "com.ibm.rqm.requirement.service.interop.repourl".
17 May 2009 18:16:22,734 WARN ository.common.transport.AbstractElementDescriptor - The com.ibm.rqm.requirement.service bundle's plugin.xml uses the component id "com.ibm.rqm.requirement" as the prefix to a <configurationProperty> element's "name" attribute with the value "com.ibm.rqm.requirement.service.interop.username".
17 May 2009 18:16:22,734 WARN ository.common.transport.AbstractElementDescriptor - The com.ibm.rqm.requirement.service bundle's plugin.xml uses the component id "com.ibm.rqm.requirement" as the prefix to a <configurationProperty> element's "name" attribute with the value "com.ibm.rqm.requirement.service.interop.password".
17 May 2009 18:16:22,734 WARN ository.common.transport.AbstractElementDescriptor - The com.ibm.rqm.requirement.service bundle's plugin.xml uses the component id "com.ibm.rqm.requirement" as the prefix to a <configurationProperty> element's "name" attribute with the value "com.ibm.rqm.requirement.service.interop.repourl".
17 May 2009 18:16:22,750 WARN ository.common.transport.AbstractElementDescriptor - The com.ibm.rqm.requirement.service bundle's plugin.xml uses the component id "com.ibm.rqm.requirement" as the prefix to a <configurationProperty> element's "name" attribute with the value "com.ibm.rqm.requirement.service.interop.username".
17 May 2009 18:16:22,750 WARN ository.common.transport.AbstractElementDescriptor - The com.ibm.rqm.requirement.service bundle's plugin.xml uses the component id "com.ibm.rqm.requirement" as the prefix to a <configurationProperty> element's "name" attribute with the value "com.ibm.rqm.requirement.service.interop.password".
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Thanks,
Manesh