[Bug 910962] Re: installArchives() failed: dpkg: unrecoverable fatal error, aborting: syntax error: unknown group 'postdrop' in statoverride file Error in function: SystemError: E:Sub-process /usr/bin/dpkg returned an error code (2)

[Raphaël Hertzog]

You should give more info on how you managed to get into this situation.
The real problem is that the postdrop group has been removed while it
was still in use by dpkg for some statoverride information. Either
postfix did drop the group without unregistering the statoverride, or
you made a mistake and dropped the group while you shouldn't.
Reassigning to postfix in the mean time.

** Package changed: dpkg (Ubuntu) => postfix (Ubuntu)

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https://bugs.launchpad.net/bugs/910962

Title:
  installArchives() failed: dpkg: unrecoverable fatal error, aborting:
  syntax error: unknown group 'postdrop' in statoverride file  Error in
  function:   SystemError: E:Sub-process /usr/bin/dpkg returned an error
  code (2)

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