When I fire up Virtualbox and start Debian, Zorin or Fedora - everything is fine.
When I try to start Mageia, Manjaro or Centos then I get "Failed to open Virtual machine"
The device helper structure version has changed.
If you have upgraded VirtualBox recently, please make sure you have terminated all VMs and upgraded any extension packs. If this error persists, try re-installing VirtualBox. (VERR_PDM_DEVHLPR3_VERSION_MISMATCH).
Now reinstalling would make sense if all my clients were fubared but most of them work just fine - Even Windows XP!
I have tried to turn on and off 3D in the Display section without any luck.
The strange thing is that while standard Manjaro does not fire in Virtualbox; the openRC version does! That is the version without Systemd.
I am a bit puzzled by this.