Cannot activate SimpleNamingContextBuilder: there is already a JNDI provider register

[kasim]

Getting follwing error when I run junit test case report through ant srcipt:

Cannot activate SimpleNamingContextBuilder: there is already a JNDI provider registered. Note that JNDI is a JVM-wide service, shared at the JVM system class loader level, with no reset option. As a consequence, a JNDI provider must only be registered once per JVM.

java.lang.IllegalStateException: Cannot activate SimpleNamingContextBuilder: there is already a JNDI provider registered. Note that JNDI is a JVM-wide service, shared at the JVM system class loader level, with no reset option. As a consequence, a JNDI provider must only be registered once per JVM.
at org.springframework.mock.jndi.SimpleNamingContextBuilder.activate(SimpleNamingContextBuilder.java:135)
at org.springframework.mock.jndi.SimpleNamingContextBuilder.emptyActivatedContextBuilder(SimpleNamingContextBuilder.java:113)
at com.bgc.ecm.core.test.ElNinoAbstractTestCase.prepareTestInstance(ElNinoAbstractTestCase.java:216)
at org.springframework.test.AbstractSingleSpringContextTests.setUp(AbstractSingleSpringContextTests.java:100)
at org.springframework.test.ConditionalTestCase.runBare(ConditionalTestCase.java:76)
at org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423)
at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137) 

 this.callerContext = (CallerContext) getApplicationContext().getBean("CallerContext");
 assertNotNull(this.callerContext);
 SimpleNamingContextBuilder builder =    
 SimpleNamingContextBuilder.emptyActivatedContextBuilder(); 

Junit target:

<junit printsummary="on" fork="yes" forkmode="perBatch" haltonfailure="false" failureproperty="junit.failure" showoutput="false">
	<classpath>
		<path refid="CLASSPATH_JUNIT"/>			
	</classpath>
	<batchtest fork="no"  todir="${TEST_BUILD_DIR}">
	   <fileset dir="${APP_DIR_CORE}\src\test">
	      <include name="**/*Test.java" />
	      <include name="**/Test*.java" />
	   </fileset>
	</batchtest>
</junit>

[kasim]

any suggestions?