Hello, i have the same problem as well, when i want to remove the unwanted application by the Janitor, it gave the misleading message. I solved this by running in terminal:
sudo apt-get autoremove hope this helps -- Computer Janitor gives misleading error message "close other package managers" when none are running https://bugs.launchpad.net/bugs/657198 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs