[Users] no activex console

Hello, Can somebody please tell how i get the activex console working. I installed the ovirt-engine 3.1 on a fedora 17 and used de beta repo. I have 2 ovirt-nodes 3.0. The datacenter is up. When i want to open a desktop vm, i don't get a activex popup and the console will not open, the linux xpi works well. I googled but i can't find a clear answer why it don't work. Thanks in advance. Kind regards, Marco