Just my luck: Friday afternoon and I hit an error in the Oracle VM.
OVMRU_001020E does not show on Google or inside Oracle Support ;-)
Am I really the first to hit that problem? Seems to be an issue with the network cards in my virtual machine. I guess I will do some more reading before I can continue installing my virtual machines.
Solved it. In the view I went to the Network Ports and selected additional ports, added them to the machine and off we go.