*** This bug is a duplicate of bug 1685984 *** https://bugs.launchpad.net/bugs/1685984
I think the problem was caused by sophos antivirus. After deactivating the on-demand scan with sudo /opt/sophos-av/bin/savdctl disable I had no problems. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1739991 Title: error processing archive (--unpack): unable to open '<FILE>.dpkg-new': Operation not permitted To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/1739991/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs