NullpointerException while publishing to Centrasite using Designer

When I publish a flow service or an IS Package to Centrasite using Designer 8.2, I am getting Nullpointerexception in IS Admin Error logs as given below.

Does anyone have any idea what could be the root cause?

ServiceName: wm.server.metadata.assets:doPublish

Stack Trace:

java.lang.NullPointerException: null
at com.softwareag.centrasite.appl.framework.persistence.mapper.impl.RelationshipAttributePropertyMapper.toJaxr(RelationshipAttributePropertyMapper.java:149)
at com.softwareag.centrasite.appl.framework.persistence.impl.BackedDynamicRegistryBeanHandler.toJaxrList(BackedDynamicRegistryBeanHandler.java:218)
at com.softwareag.centrasite.appl.framework.persistence.impl.BackedDynamicRegistryBeanHandler.invoke(BackedDynamicRegistryBeanHandler.java:158)
at $Proxy39.setDeploy_On(Unknown Source)
at com.softwareag.is.metadata.assets.ns.NSAsset.setNSAssetBean(NSAsset.java:106)
at com.softwareag.is.metadata.assets.ns.NSNodeAsset.setNSAssetBean(NSNodeAsset.java:188)
at com.softwareag.is.metadata.assets.ns.NSServiceAsset.setBean(NSServiceAsset.java:237)
at com.softwareag.is.metadata.assets.ns.FlowServiceAsset.setBean(FlowServiceAsset.java:116)
at com.softwareag.is.metadata.assets.ns.NSServiceAsset.setBean(NSServiceAsset.java:231)
at com.softwareag.is.metadata.centrasite.CSBeanExtraction.getPublishBean(CSBeanExtraction.java:152)
at com.softwareag.is.metadata.assets.Asset.extractAsPublished(Asset.java:260)
at com.softwareag.is.metadata.event.PublishEvent.publishAsBeans(PublishEvent.java:246)
at com.softwareag.is.metadata.event.PublishEvent.execute(PublishEvent.java:155)
at wm.server.metadata.assets.doPublish(assets.java:118)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.wm.app.b2b.server.JavaService.baseInvoke(JavaService.java:443)
at com.wm.app.b2b.server.invoke.InvokeManager.process(InvokeManager.java:643)
at com.wm.app.b2b.server.util.tspace.ReservationProcessor.process(ReservationProcessor.java:41)
at com.wm.app.b2b.server.invoke.StatisticsProcessor.process(StatisticsProcessor.java:44)
at com.wm.app.b2b.se…

Hi Nilesh,
which version of CentraSite did you use? Did you install all currently available fixes for the two products in question?
Regards,
Gerald