HTTP STatus 500 in Instance Manager

Hi Guys,

we are on BOXI 3.1 and I tried to call the Instance Manager, but I got the following error:

Any help is really appreciated!

Rgds,

Christian

-

type Exception report

message 

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

exception 

org.apache.jasper.JasperException: Exception in JSP: /Kind/InstanceConsole/list.jsp:337

334: type="hidden"
335: name="appKind"
336: value="CMC" >
337: div id="<%=hostApplicationBean.getUreDivName()%>" > < ure:explorer
338: id="UniversalRepositoryExplorer"
339: communicationMode="#{instanceBean.communicationMode}"
340: enterpriseSession="#{instanceBean.enterpriseSession}"

Stacktrace:
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:506)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:395)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	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.webutil.boetrustguard.BOETrustedRequestCreator.doFilter(BOETrustedRequestCreator.java:96)
	com.businessobjects.webutil.boetrustguard.BOETrustFilter.doFilter(BOETrustFilter.java:83)
	com.businessobjects.webutil.TimeoutCheckerFilter.doFilter(TimeoutCheckerFilter.java:99)

-