Advanced Copy of Layout Set - StackOverflow

HELP!
On one of my 2 sandboxes I am unable to launch and "Advanced Copy" of any layout set (Configuration ==> Content Management ==> User Interface ==> Settings ==> Layout Set). At the time I click on the command I get a StackOverflow exception no matter what options for copy I set but I can export the complete tree without any problem.
I have this problem since SP14 and now up to SP16.
Any advice? I can't see any specific message in the log file other than the stack overflow....
[code]
#1.5#000C29425CE00010000000040000017C00040E7C821C3DFC#1141827828265#com.sapportals.config.ui.control.ViewControl#sap.com/irj#com.sapportals.config.ui.control.ViewControl#treccv#58##com45sap_J2E_2876850#treccv#0e565660aeaf11da8d39000c29425ce0#SAPEngine_Application_Thread[impl:3]_25##0#0#Error##Plain###An error occured while trying to render the html page
java.lang.StackOverflowError
#1.5#000C29425CE00010000000050000017C00040E7C821E45B4#1141827828390#com.sap.portal.portal#sap.com/irj#com.sap.portal.portal#treccv#58##com45sap_J2E_2876850#treccv#0e565660aeaf11da8d39000c29425ce0#SAPEngine_Application_Thread[impl:3]_25##0#0#Error#1#/System/Server#Java###Exception ID:09:23_08/03/06_0010_2876850
[EXCEPTION]
#1#com.sapportals.portal.prt.component.PortalComponentException: Error in service call of Portal Component
Component : pcd:portal_content/administrator/super_admin/super_admin_role/com.sap.portal.system_administration/com.sap.portal.system_admin_ws/com.sap.portal.system_configuration/com.sap.km.AdminConfig/com.sap.km.AdminConfigCM/com.sap.km.ConfigCM
Component class : com.sapportals.portal.prt.component.config.ConfigComponent
User : treccv
at com.sapportals.portal.prt.core.PortalRequestManager.handlePortalComponentException(PortalRequestManager.java:969)
at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:343)
at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:136)
at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:189)
at com.sapportals.portal.prt.component.PortalComponentResponse.include(PortalComponentResponse.java:215)
at com.sapportals.portal.prt.pom.PortalNode.service(PortalNode.java:646)
at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:328)
at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:136)
at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:189)
at com.sapportals.portal.prt.core.PortalRequestManager.runRequestCycle(PortalRequestManager.java:753)
at com.sapportals.portal.prt.connection.ServletConnection.handleRequest(ServletConnection.java:240)
at com.sapportals.portal.prt.dispatcher.Dispatcher$doService.run(Dispatcher.java:545)
at java.security.AccessController.doPrivileged(Native Method)
at com.sapportals.portal.prt.dispatcher.Dispatcher.service(Dispatcher.java:405)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.servlet.InvokerServlet.service(InvokerServlet.java:156)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:390)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:264)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:347)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:325)
at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:887)
at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:241)
at com.sap.engine.services.httpserver.server.Client.handle(Client.java:92)
at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:148)
at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
at java.security.AccessController.doPrivileged(Native Method)
at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:100)
at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170)
Caused by: com.sapportals.wdf.WdfError
at com.sapportals.wdf.WdfCompositeController.buildComposition(WdfCompositeController.java:678)
at com.sapportals.htmlb.AbstractCompositeComponent.preRender(AbstractCompositeComponent.java:33)
at com.sapportals.htmlb.Container.preRender(Container.java:120)
at com.sapportals.htmlb.Container.preRender(Container.java:120)
at com.sapportals.htmlb.Container.preRender(Container.java:120)
at com.sapportals.portal.htmlb.PrtContext.render(PrtContext.java:414)
at com.sapportals.htmlb.page.DynPage.doOutput(DynPage.java:237)
at com.sapportals.htmlb.page.PageProcessor.handleRequest(PageProcessor.java:129)
at com.sapportals.portal.htmlb.page.PageProcessorComponent.doContent(PageProcessorComponent.java:134)
at com.sapportals.portal.prt.component.AbstractPortalComponent.serviceDeprecated(AbstractPortalComponent.java:209)
at com.sapportals.portal.prt.component.AbstractPortalComponent.service(AbstractPortalComponent.java:114)
at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:328)
... 29 more
[/code]

I moved this topic to KMC forum.

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