I also had this problem , what i did to solve it is that I edited the /etc/init.d/bluetooth startup script and just commented the stop line and added "exit 0". After this change the installation process had passed. I checked the new startup script and there was another solution made by the package team "pkill -TERM bluetoothd || true" this should always return true :)
-- package bluez 4.45-0ubuntu2 failed to install/upgrade: subprocess new pre-removal script returned error exit status 1 https://bugs.launchpad.net/bugs/399543 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