Comment 11 for bug 1642966

Same problem here:

Preparing to unpack .../cups-daemon_2.1.3-4ubuntu0.1_amd64.deb ...
Job for cups.service canceled.
invoke-rc.d: initscript cups, action "stop" failed.
dpkg: warning: subprocess old pre-removal script returned error exit status 1
dpkg: trying script from the new package instead ...
Job for cups.service canceled.
invoke-rc.d: initscript cups, action "stop" failed.
dpkg: error processing archive /var/cache/apt/archives/cups-daemon_2.1.3-4ubuntu0.1_amd64.deb (--unpack):
 subprocess new pre-removal script returned error exit status 1
[…]
Errors were encountered while processing:
 /var/cache/apt/archives/cups-daemon_2.1.3-4ubuntu0.1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
Failed to perform requested operation on package. Trying to recover:
[…]

After trying the upgrade a second time, it worked:

Unpacking cups-daemon (2.1.3-4ubuntu0.1) over (2.1.3-4) ...
Preparing to unpack .../libisc-export160_1%3a9.10.3.dfsg.P4-8ubuntu1.3_amd64.deb ...
[…]
Setting up cups-daemon (2.1.3-4ubuntu0.1) ...
Setting up cups-core-drivers (2.1.3-4ubuntu0.1) ...
Setting up cups (2.1.3-4ubuntu0.1) ...
Updating PPD files for cups ...

But /var/log/cups/error_log is empty.