I've just uninstalled vn 5.0.36 of Virtualbox, and installed vn 5.1.18. At least I think I have.. However, when I use the 'search your computer' feature in Ubuntu 16.04, it still seems to find the old version, although it says it's installed 'nowhere'.
Confused? Me too, but it gets better, or rather, worse.
Immediately after installing the new version I was able to add a VM from the previous version, start it, use it and suspend it while I went out to the Co-Op (I live life in the fast lane..)
Now I open Virtualbox to find the welcome screen and no existing VMs. What's more, I can't add the same VM again. I get the following message...
Runtime error opening '/home/mike/VirtualBox VMs/XP/XP.vbox' for reading: -38(Access denied.).
/home/vbox/vbox-5.1.18/src/VBox/Main/src-server/MachineImpl.cpp (nsresult Machine::initFromSettings(VirtualBox*, const com::Utf8Str&, const com::Guid*)).
I've tried moving the VM to my home folder in case that helped, but Ubuntu tells me I don't own it, so I can't move it.
I'm the only user of this PC and I created the old VM, so how can I not be the owner?
As always, thanks in advance for any/all help..