Starting a 3.7.13 install on my (Vbox copy) Helix2 containg stable and 3.7.10 ..... 10am local time NL.
I opt to upgrade 3.7.10 where upon the installer simply disappears completely when I hit OK.
Waiting for it to finish, if at all.
I have vokoscreen running to record the session.
After 30-40 minutes I rebooted and 3.7.10 wasn't touched ...... so nothing happened at all.
Running the installer from the USB.img upgrades just fine on the same laptop that vbox is on.
Will now try with the .iso written to USB flashdrive.
Updating as I go
The Hybrid.iso also installs fine on bare metal so it must be a Vbox issue.