Lab Manager console is disconnected and shows a blank grey screen

Hello,
I am trying to solve an issue in Lab Manager v4.0 (no update 1) that is perplexing me. I am simply trying to show or view an open console in Lab manager using IE6. I am prompted to install the MKS add-on (quickMksAx.dll) and I can that no problem. When I try to "show" the console view it pauses for a few seconds and then displays "The console is disconnected" wiht a bland grey background. I have spent several hours searching for a solution on google but to no avail. I have tried these documented workarounds on the VMware website but again to no avail. Any help would be much appreciated. There are several users in our company that will access Lab Manager via IE6 exclusively. I need to know what settings to change in IE to get around this problem. One important note, this only happens when I connect to Lab Manager 4.0. Works fine on Lab Manager v3.
I attached a jpg showing the error screen.
Thank you in advance!

I'm running LabManager 4.04 with IE9 and Firefox 10.x. The Black Windows Screen is sometimes there sometimes not.
The Browsers more or less doenst react when connecting and then the Console Window through mks-plugin is there and sometimes
the black window appears.
I first thought some problems with a local firewall and checked the logfile but none of the ports and ip destinations show up as blocked.
Then i checked the system with the process explorer. The mks plugin exe doesnt seem to start when the black window appears.
When the Console is visible the vmware plugin starts up and is availabe in the process monitor.
The Plugin writes logfiles in the logged in users Appdata\Local\vmware....\vmware-%username%-xxxx.txt but first when it could be started.
I havent checked by now the following possible reasons
- Identical Systemtime
- DNS Resolution of ESX-Hosts
- Webconsole Interface vCenter
But why does it work sometimes and sometimes not the possible reasons doesnt fit to Identical Systemetime, DNS-Resolution and Webconsole..
If these reseans are responsible it shouldnt work at all and not the sometimes it does and sometimes it dont
Chers
Michael

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