Trouble to install DisplayLink USB Device

[warrie]

Hi guys,

I just bought a i-tec dockingstation and tried to install the current DisplayLink 7.8 software. The installer starts but hangs on the third step "First Connection". I plugged the usb cable of the dockingstation into my notebook, but nothing happens. It looks like somehow I can't install the DisplayLink USB device driver because if I plug in a external hdd drive into my docking station, I can access that drive! So I think the usb cable to the DisplayLink USB device is fine (dockingstation). Can somebody give me a hint, what I should look for?

I also attached the support files with more information. I'd be very happy if somebody could help me.