ejbdeploy tag giving errors(using Wbespher5 nad java 1.5)

Hi,
I'am trying to deploy a simple session bean in Wbespher5.I've set java_home as IMB jdk and triying to create the jar file calling ant script file. script file listed below.
<target name="init">
<property name="WAS_HOME" value="D:/websphere/programmes"/>
<property name="destRoot" value="../../"/>
<property name="modulename" value="DailyOperationalReport"/>
<property name="dir" value=".."/>
<property name="src" value="."/>
<property name="libroot" value="../../lib"/>
<property name="etcroot" value="../../etc"/>
<property name="devRoot" value="../../"/>
<property name="websphere.home" value="C:/Program Files/WebSphere/AppServer"/>
<property name="entitydeploymentroot" value="${src}/no/braathens/dailyoperationalreport/session/deployment/"/>
<property name="psdeploymentroot" value="${src}/no/braathens/dailyoperationalreport/persistentservices/deployment/"/>
<property name="deploymentroot" value="${src}/no/braathens/dailyoperationalreport/server/deployment/"/>
<property name="webservicedeploymentroot" value="${src}/no/braathens/dailyoperationalreport/server/webservices/deployment"/>
<property name="clientjarfile" value="${modulename}.jar"/>
<property name="serverjarfile" value="${modulename}.jar"/>
<property name="warfile" value="${modulename}.war"/>
<property name="webservicewarfile" value="dailyoperationalreport.war"/>
<property name="testjarfile" value="UnitTest${modulename}.jar"/>
<property name="testwarfile" value="UnitTest${modulename}.war"/>

<property name="classpath" value=""/>
<property name="localclasses" value="${destRoot}localclasses"/>
<tstamp/>
<property name="build" value="${destRoot}/build/${modulename}"/>
<property name="dist" value="${destRoot}/dist"/>
<property name="webservicesdist" value="${dist}/webservices"/>
<property name="webservicedist" value="${webservicesdist}/webservice"/>
<property name="webinfdist" value="${webservicedist}/WEB-INF"/>
<property name="ejbdist" value="${dist}/ejb/"/>
<property name="clientdist" value="${dist}/client/"/>
<property name="serverdist" value="${dist}/server/"/>
<property name="servletdist" value="${dist}/servlet/"/>
<property name="testdist" value="${dist}/test/"/>
<property name="entityejbjarinclude" value="${ejbdist}GeneralInformation.jar;${ejbdist}UnsuitableFlight.jar;${ejbdist}FlightOperationalEvent.jar;${ejbdist}CrewOperationalEvent.jar;${ejbdist}InsufficientCrew.jar;${ejbdist}SickLeave.jar"/>
<property name="psejbjarinclude" value="${ejbdist}DORFlightControlServices.jar;${ejbdist}GeneralOperationalInformationPersistentServices.jar;${ejbdist}UnsuitableFlightPersistentServices.jar;${ejbdist}FlightOperationalEventPersistentServices.jar;${ejbdist}CrewOperationalEventPersistentServices.jar;${ejbdist}InsufficientCrewPersistentServices.jar;${ejbdist}SickLeavePersistentServices.jar"/>
<filter token="version" value="1.0"/>
<filter token="year" value="2001"/>
<path id="build.classpath">
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/org.eclipse.core.boot_2.1.1/boot.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/batch.jar"/>
<pathelement location="${WAS_HOME}/lib/xerces.jar"/>
<pathelement location="${WAS_HOME}/lib/ivjejb35.jar"/>
<pathelement location="${WAS_HOME}/lib/j2ee.jar"/>
<pathelement location="${WAS_HOME}/lib/vaprt.jar"/>
<pathelement location="${WAS_HOME}/properties"/>

<pathelement location="${WAS_HOME}/deploytool/itp/plugins/org.eclipse.core.runtime_2.1.1/runtime.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/org.eclipse.core.resources_2.1.1/resources.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/com.ibm.etools.j2ee.core/runtime/commonArchive.jar"/>
<pathelement location="${WAS_HOME}/lib/ecore.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/org.eclipse.emf.common_1.1.1/runtime/common.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/com.ibm.etools.j2ee/runtime/j2eecreation.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/com.ibm.etools.java/runtime/javaplugin.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/com.ibm.etools.j2ee/runtime/ejbcreation.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/com.ibm.etools.j2ee/runtime/j2eeplugin.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/com.ibm.etools.j2ee/runtime/earproject.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/org.eclipse.jdt.core_2.1.2/jdtcore.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/com.ibm.etools.emf.workbench/runtime/emfworkbench.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/com.ibm.etools.j2ee/runtime/archiveops.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/com.ibm.etools.logging.util/runtime/logutil.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/com.ibm.etools.ejbdeploy/runtime/rmic.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/com.ibm.etools.ejbdeploy/runtime/exec.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/com.ibm.etools.validation/runtime/validate.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/org.eclipse.hyades.logging.core_1.0.3/hlcore.jar"/>
<pathelement location="${WAS_HOME}/deploytool/itp/plugins/org.eclipse.hyades.execution.remote_1.0.3/hexr.jar"/>

</path>
</target>
<target name="entityejb" depends="init,compile">
<mkdir dir="${ejbdist}"/>
<property name="webpshere.home" value="${WAS_HOME}"/>
<ejbjar srcdir="${build}" descriptordir="${entitydeploymentroot}" dependency="full">
<include name="*ejb-jar.xml"/>
<websphere ejbdeploy="true" keepgeneric="true" quiet="false" oldCMP="false" tempdir="c:\temps" destdir="${ejbdist}">
<classpath>
<path refid="build.classpath"/>
</classpath>
</websphere>
<dtd publicId="-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" location="C:/Program Files/WebSphere/AppServer/deploytool/itp/plugins/com.ibm.etools.j2ee/dtds/ejb-jar_2_0.dtd"/>
</ejbjar>
</target>

the error that I'am getting is listed below.

[ejbdeploy] Starting workbench.
[ejbdeploy] 20031007_1915-WB212-AD-V511D-W5
[*Error] An unexpected exception was thrown. Halting execution.
[ejbdeploy] Shutting down workbench.
[ejbdeploy] Could not locate extension point: com.ibm.etools.ejbdeploy.batch_extension
[ejbdeploy] com.ibm.etools.ejbdeploy.ConfigurationError: Could not locate extension point: com.ibm.etools.ejbdeploy.batch_exte
nsion
[ejbdeploy] at com.ibm.etools.ejbdeploy.batch.impl.BatchDeploy.execute(BatchDeploy.java:146)
[ejbdeploy] at com.ibm.etools.ejbdeploy.EJBDeploy.execute(EJBDeploy.java:80)
[ejbdeploy] at com.ibm.etools.ejbdeploy.EJBDeploy.main(EJBDeploy.java:307)
[ejbdeploy] EJBDeploy level: 20031007_1915-WB212-AD-V511D-W5

Please be knid enough to reply for this mail as soon as possible.

thanx
vkr