Login issues with vFabric application director 5

Hi,

I deployed the vFabric application director 5 appliance in my vCloud environment 5.x.

I can see the login page (from the vFabricapplication director 5) on https://x.x.x.x:8443/darwin/ but after I entered the login credentials I received a blank page.

I tried this with IE8/9 and Firefox Brwoser flash player is installed.

Any ideas what is wrong?

Thanks for your help.