[Solved] can't open VMs after downgrading version of VirtualBOx

[Jeff Bourdeau]

I forgot to turn off my VMs before uninstalling Virtual box last version to downgrade to 5.1 to see if it would still FREEZE my PC ( Ubuntu 17.10, last kernel)

Now when lauching my VM wit VB 5.1, it commplains about the saves states...

Should I recreate the VM ?

JF
I will also uinstall GUest Addition (I should have done it before when still in VB 5.2) once I can boot the VMs( Linux, Windows )

[Jeff Bourdeau]

LOl
Discard Save state in the VM manager solved it Sorry