Something else I'll mention that had me stumped.
I needed to delete the VM and re-install the PIWIS.ova file to create a new VM. It kept giving me an error in Virtualbox when I tried to created the VM. The reason was the original files for the first VM hadn't been deleted correctly. They should have been, but the folder was still there.
If you get this problem, go to C/User/Username/Virtualbox VMs and delete the old PIWIS folder. If it's there, Virtualbox won't allow you to created another VM of the same name.
I needed to delete the VM and re-install the PIWIS.ova file to create a new VM. It kept giving me an error in Virtualbox when I tried to created the VM. The reason was the original files for the first VM hadn't been deleted correctly. They should have been, but the folder was still there.
If you get this problem, go to C/User/Username/Virtualbox VMs and delete the old PIWIS folder. If it's there, Virtualbox won't allow you to created another VM of the same name.