This is the error:
ProvisioningError: guess_names: 'realm =' was not specified in supplied /etc/samba/smb.conf. Please remove the smb.conf file and let provision generate it
dpkg: error processing samba4 (--configure):
subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
samba4
E: Sub-process /usr/bin/dpkg returned an error code (1)
The file was not present before I tried to install. It appears the file is installed by the samba4 installation procedure, but it is created incorrectly.
ProblemType: Package
DistroRelease: Ubuntu 11.10
Package: samba4 4.0.0~alpha17~git20110807.dfsg1-1ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-10.16-generic 3.0.4
Uname: Linux 3.0.0-10-generic x86_64
ApportVersion: 1.22.1-0ubuntu2
Architecture: amd64
Date: Fri Sep 9 16:26:30 2011
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110803.1)
SourcePackage: samba4
Title: package samba4 4.0.0~alpha17~git20110807.dfsg1-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to oneiric on 2011-09-06 (2 days ago)
Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #832465, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.