Exporting SAS flow option gives java array error.

[JJP1]

Iam using SAS DI to take a backup of deployed flow.but i was getting error note as shown below.

i checked in google it says that issue with hierarchical folder. but it's happening with only single flow. anyone has any idea on this please .

ERROR - Error exporting content for Deployed flow objects.
java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 0
	at java.util.Vector.get(Unknown Source)
	at com.sas.metadata.remote.MdObjectListImpl.get(MdObjectListImpl.java:2554)
	at com.sas.metadata.remote.AssociationList.get(AssociationList.java:1665)
	at com.sas.scheduler.api.oma.DeployedFlow.processGrouping(DeployedFlow.java:9377)
	at com.sas.scheduler.api.oma.DeployedFlow.getAbstractEvents(DeployedFlow.java:4918)
	at com.sas.scheduler.api.oma.DeployedFlow.getStepXML(DeployedFlow.java:4049)
	at com.sas.scheduler.api.oma.DeployedFlow.getXML(DeployedFlow.java:3919)
	at com.sas.metadata.logical.scheduler.flow.DeployedFlowExportListener.exportContent(DeployedFlowExportListener.java:86)
	at com.sas.metadata.promotion.ExportHandler.exportContent(ExportHandler.java:595)
	at com.sas.metadata.promotion.ExportHandler.runExport(ExportHandler.java:518)
	at com.sas.metadata.promotion.visuals.ExportExecutePanel$ExportThread.launchOperation(ExportExecutePanel.java:71)
	at com.sas.metadata.promotion.visuals.AbstractExecutePanel$ExecutionThread.run(AbstractExecutePanel.java:442)
INFO  - ******** Analyzing Connections ********
INFO  - The following connections will need to be mapped to target values when this package is imported: