Promotion management error bi4.1

I am using Promotion management tool to migrate report/universes, users group from BI4.1 Prod to BI4.1 Test environment. I am getting the following error when i try to add objects in Promotion Management tool.

Can anybody help me on how to fix this error?

HTTP Status 500 - java.lang.RuntimeException: org.apache.jasper.JasperException: java.util.ConcurrentModificationException

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type Exception report

message java.lang.RuntimeException: org.apache.jasper.JasperException: java.util.ConcurrentModificationException

description The server encountered an internal error that prevented it from fulfilling this request.

exception

java.lang.RuntimeException: java.lang.RuntimeException: org.apache.jasper.JasperException: java.util.ConcurrentModificationException

com.businessobjects.http.servlet.internal.BundlePathAwareServiceHandler.serviceHelper(BundlePathAwareServiceHandler.java:254)

com.businessobjects.http.servlet.internal.BundlePathAwareServiceHandler.service(BundlePathAwareServiceHandler.java:197)

com.businessobjects.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:248)

javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

org.eclipse.equinox.servletbridge.BridgeServlet.service(BridgeServlet.java:220)

javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

com.businessobjects.pinger.TimeoutManagerFilter.doFilter(TimeoutManagerFilter.java:168)

root cause

java.lang.RuntimeException: org.apache.jasper.JasperException: java.util.ConcurrentModificationException

com.businessobjects.http.servlet.internal.BundlePathAwareServiceHandler.serviceHelper(BundlePathAwareServiceHandler.java:254)

com.businessobjects.http.servlet.internal.BundlePathAwareServiceHandler.service(BundlePathAwareServiceHandler.java:197)

com.businessobjects.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:248)

javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

org.eclipse.equinox.servletbridge.BridgeServlet.service(BridgeServlet.java:220)

javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

com.businessobjects.http.servlet.internal.servlet.RequestDispatcherAdaptor.forward(RequestDispatcherAdaptor.java:31)

com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:346)

com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:152)

com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:107)

com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245)

com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:137)

javax.faces.webapp.FacesServlet.service(FacesServlet.java:214)

com.businessobjects.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:110)

com.businessobjects.http.servlet.internal.ServletLastFilterChainElement.service(ServletLastFilterChainElement.java:30)

com.businessobjects.http.servlet.internal.filter.FilterChainImpl.doFilter(FilterChainImpl.java:46)

com.businessobjects.lcm.LCMCacheControleFilter.doFilter(LCMCacheControleFilter.java:27)

com.businessobjects.http.servlet.internal.FilterRegistration.doFilter(FilterRegistration.java:72)

com.businessobjects.http.servlet.internal.filter.FilterChainImpl.doFilter(FilterChainImpl.java:43)

com.businessobjects.bip.core.web.boetrustguard.BOETrustPrepareFilter.doFilter(BOETrustPrepareFilter.java:35)

com.businessobjects.http.servlet.internal.FilterRegistration.doFilter(FilterRegistration.java:72)

com.businessobjects.http.servlet.internal.filter.FilterChainImpl.doFilter(FilterChainImpl.java:43)

com.businessobjects.bip.core.web.supportabilty.TraceLogScopeFilter.doFilter(TraceLogScopeFilter.java:38)

com.businessobjects.http.servlet.internal.FilterRegistration.doFilter(FilterRegistration.java:72)

com.businessobjects.http.servlet.internal.filter.FilterChainImpl.doFilter(FilterChainImpl.java:43)

com.businessobjects.sdk.actionfilter.WorkflowFilter.doFilter(WorkflowFilter.java:45)

com.businessobjects.http.servlet.internal.FilterRegistration.doFilter(FilterRegistration.java:72)

com.businessobjects.http.servlet.internal.filter.FilterChainImpl.doFilter(FilterChainImpl.java:43)

com.businessobjects.bip.core.web.appcontext.RequestInitFilter.doFilter(RequestInitFilter.java:26)

com.businessobjects.http.servlet.internal.FilterRegistration.doFilter(FilterRegistration.java:72)

com.businessobjects.http.servlet.internal.filter.FilterChainImpl.doFilter(FilterChainImpl.java:43)

com.businessobjects.http.servlet.internal.BundlePathAwareServiceHandler.serviceHelper(BundlePathAwareServiceHandler.java:235)

com.businessobjects.http.servlet.internal.BundlePathAwareServiceHandler.service(BundlePathAwareServiceHandler.java:197)

com.businessobjects.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:248)

javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

org.eclipse.equinox.servletbridge.BridgeServlet.service(BridgeServlet.java:220)

javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

com.businessobjects.pinger.TimeoutManagerFilter.doFilter(TimeoutManagerFilter.java:168)

root cause

org.apache.jasper.JasperException: java.util.ConcurrentModificationException

org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)

org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)

org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)

javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

org.eclipse.equinox.jsp.jasper.JspServlet.service(JspServlet.java:121)