RS in member lis of group if someone clicks the "Date added"

2015-08-10 17:41:50,051 [ajp-nio2-8004-exec-96] ERROR AssertException - OLAT::ERROR ^%^ N4-E37 ^%^ org.olat.core.logging

Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko ^%^ **RedScreen** a link in ajax mode should never result in a new window

>>> stack of 1.cause::org.olat.core.logging.AssertException: a link in ajax mode should never result in a new window
-> at org.olat.core.gui.components.Window.dispatchRequest(Window.java:372)
   at org.olat.core.gui.components.Window.doDispatchRequest(Window.java:234)
   at org.olat.core.gui.components.AbstractComponent.dispatchRequest(AbstractComponent.java:193)
   at org.olat.dispatcher.AuthenticatedDispatcher.processValidDispatchURI(AuthenticatedDispatcher.java:245)
   at org.olat.dispatcher.AuthenticatedDispatcher.execute(AuthenticatedDispatcher.java:201)
   at org.olat.core.servlets.OpenOLATServlet.executeUserRequest(OpenOLATServlet.java:280)
   at org.olat.core.servlets.OpenOLATServlet.doGet(OpenOLATServlet.java:209)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
   at org.olat.core.servlets.OpenOLATServlet.service(OpenOLATServlet.java:166)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
>>> stack of 2.cause::java.lang.Exception: assertionstackgenerator
-> at org.olat.core.logging.AssertException.<init>(AssertException.java:53)
   at org.olat.core.gui.components.Window.dispatchRequest(Window.java:372)
   at org.olat.core.gui.components.Window.doDispatchRequest(Window.java:234)
   at org.olat.core.gui.components.AbstractComponent.dispatchRequest(AbstractComponent.java:193)
   at org.olat.dispatcher.AuthenticatedDispatcher.processValidDispatchURI(AuthenticatedDispatcher.java:245)
   at org.olat.dispatcher.AuthenticatedDispatcher.execute(AuthenticatedDispatcher.java:201)
   at org.olat.core.servlets.OpenOLATServlet.executeUserRequest(OpenOLATServlet.java:280)
   at org.olat.core.servlets.OpenOLATServlet.doGet(OpenOLATServlet.java:209)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
   at org.olat.core.servlets.OpenOLATServlet.service(OpenOLATServlet.java:166)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)