No, I had not upgraded my extension pack and after I had the error did not occur any longer.
However, VirtualBox being capable of upgrading without *also* upgrading any extension packs classifies as a bug. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1660093 Title: VirtualBox error - device helper structure version has changed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/1660093/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs