LMS4.2.4 TopologyView is the 1st version that requires JRE1.7 (1.6 before), by means the special Cisco bundled JRE image jre-7u21-windows-i586-p_withjacorb that tries to install 4 jar Files in a system folder.
This is only working on the LMS server logged in as real Administrator, but not from remote clients also with users having Windows-Administartor rights.
The step of placing the 4 jar-Files is hanging in a endless loop. Message with jacorb-sign-1-3.jar … installed successfully appears everitime I start the Topology view, even if I restart the browser and also the Windows system.
Not sure if it helps but I just checked my working setup on my laptop (accessing two different LMS 4.2.4 servers - one on Windows and one on soft appliance) and see that the endorsed folder is still sitting under jre6/lib/endorsed. Topology works from that client.
To check it out again I went to another client (the Windows server where the one LMS runs) that had not had Java updated. I launched from there, was redirected to the LMS-provided Java download, installed that and refreshed to relaunch Topology applet. It installed the jar files properly under jre7/lib/endorsed and relaunching Topology was successful.