org.eclipse.core.commands.ExecutionException: Error exporting test.war
	at org.eclipse.jst.j2ee.internal.archive.operations.ComponentExportOperation.execute(ComponentExportOperation.java:150)
	at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl$1.run(DataModelPausibleOperationImpl.java:390)
	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2451)
	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2476)
	at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.runOperation(DataModelPausibleOperationImpl.java:415)
	at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.runOperation(DataModelPausibleOperationImpl.java:365)
	at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.doExecute(DataModelPausibleOperationImpl.java:251)
	at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.executeImpl(DataModelPausibleOperationImpl.java:223)
	at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.cacheThreadAndContinue(DataModelPausibleOperationImpl.java:92)
	at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.execute(DataModelPausibleOperationImpl.java:211)
	at org.eclipse.wst.common.frameworks.internal.datamodel.ui.DataModelWizard$1CatchThrowableRunnableWithProgress.run(DataModelWizard.java:223)
	at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:124)
Caused by: java.lang.NullPointerException: Cannot read the array length because "moduleParticipants" is null
	at org.eclipse.jst.j2ee.internal.archive.operations.JavaEEComponentExportOperation.getParticipants(JavaEEComponentExportOperation.java:54)
	at org.eclipse.jst.j2ee.internal.archive.operations.JavaEEComponentExportOperation.createFlatComponentArchiver(JavaEEComponentExportOperation.java:91)
	at org.eclipse.jst.j2ee.internal.archive.operations.ComponentExportOperation.export(ComponentExportOperation.java:191)
	at org.eclipse.jst.j2ee.internal.archive.operations.ComponentExportOperation.execute(ComponentExportOperation.java:136)
	... 11 more