It seems I'm battling to get the heat map working in 6.3. I'm using firefox 18.0.1 and I've approved the java applet to run whenever I connect to the vOPS site. However every time it launches I get a page error. Looking at the java console it is telling me the following ( I have edited out the domain name):

network: Cache entry not found [url: http://vops.xxxxx.com/, version: null]

network: Cache entry not found [url: http://vops.xxxxx.com/com/labescape/explorer/applet/HeatMapExplorerApplet.class, version: null]

network: Connecting http://vops.xxxxx.com/com/labescape/explorer/applet/HeatMapExplorerApplet.class with proxy=DIRECT

network: Connecting http://vops.xxxxx.com:80/ with proxy=DIRECT

network: Cache entry not found [url: http://vops.xxxxx.com/com/labescape/explorer/applet/HeatMapExplorerApplet/class.class, version: null]

network: Connecting http://vops.xxxxx.com/com/labescape/explorer/applet/HeatMapExplorerApplet/class.class with proxy=DIRECT

network: Connecting http://vops.xxxxx.com:80/ with proxy=DIRECT

java.lang.ClassNotFoundException: com.labescape.explorer.applet.HeatMapExplorerApplet.class

          at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)

          at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)

          at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)

          at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)

          at java.lang.ClassLoader.loadClass(Unknown Source)

          at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)

          at sun.plugin2.applet.Plugin2Manager.initAppletAdapter(Unknown Source)

          at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)

          at java.lang.Thread.run(Unknown Source)

basic: load: class com.labescape.explorer.applet.HeatMapExplorerApplet.class not found.