package samba4 4.0.0+dfsg1-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 255 [ERROR(ldb): uncaught exception - 0000052D: Constraint violation - check_password_restrictions]

[Noel Barlau]

Playing around with Linux for the past 10 years or so - very very much a dabbler. Probably screwed something up. It's very strange that Ubuntu used to be able to talk to my Windows computers over Samba with nary a problem, but now it's almost impossible to get to work. What happened?

ProblemType: Package
DistroRelease: Ubuntu 13.04
Package: samba4 4.0.0+dfsg1-1ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
Uname: Linux 3.8.0-19-generic i686
ApportVersion: 2.9.2-0ubuntu8
Architecture: i386
Date: Sun Apr 28 16:32:56 2013
ErrorMessage: subprocess installed post-installation script returned error exit status 255
InstallationDate: Installed on 2013-04-28 (0 days ago)
InstallationMedia: Lubuntu 13.04 "Raring Ringtail" - Release i386 (20130423.1)
MarkForUpload: True
SourcePackage: samba4
Title: package samba4 4.0.0+dfsg1-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 255
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.