[Bug 987267] Re: package ntp 1:4.2.6.p3+dfsg-1ubuntu3 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 1

[James Page]

*** This bug is a duplicate of bug 972299 ***
    https://bugs.launchpad.net/bugs/972299

Setting up ntp (1:4.2.6.p3+dfsg-1ubuntu3) ...
Installing new version of config file /etc/apparmor.d/usr.sbin.ntpd ...
chown: invalid group: `ntp:ntp'
dpkg: error processing ntp (--configure):
 subprocess installed post-installation script returned error exit status 1

** This bug has been marked a duplicate of bug 972299
   package ntp 1:4.2.6.p3+dfsg-1ubuntu3 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 1

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https://bugs.launchpad.net/bugs/987267

Title:
  package ntp 1:4.2.6.p3+dfsg-1ubuntu3 failed to install/upgrade:
  ErrorMessage: subprocess installed post-installation script returned
  error exit status 1

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