nov 17, 2021 solved. Succeeded to install in second try. I think the version of the ext-pack was not conform the version of my virtualbox.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1946355 Title: package virtualbox-ext-pack 6.1.26-2~ubuntu1.20.04.1 failed to install/upgrade: installed virtualbox-ext-pack package post- installation script subprocess returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox-ext-pack/+bug/1946355/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs