I have the same error when configuring mono-gac via apt-get. Added interesting parts of my apport report because vince's report has no (useful) information in dpkgterminallog (see bug #1049223).
** Attachment added: "Especially DpkgTerminalLog is interesting." https://bugs.launchpad.net/ubuntu/+source/mono/+bug/764147/+attachment/3469022/+files/ApportReport_2012-12-26.txt -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mono in Ubuntu. https://bugs.launchpad.net/bugs/764147 Title: package mono-gac 2.4.4~svn151842-1ubuntu4 failed to install/upgrade: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 9 zurück Status in “mono” package in Ubuntu: Confirmed Bug description: Binary package hint: mono No known details ProblemType: Package DistroRelease: Ubuntu 10.04 Package: mono-gac 2.4.4~svn151842-1ubuntu4 ProcVersionSignature: Ubuntu 2.6.32-30.59-generic 2.6.32.29+drm33.13 Uname: Linux 2.6.32-30-generic x86_64 Architecture: amd64 Date: Mon Apr 18 10:56:15 2011 ErrorMessage: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 9 zurück PackageArchitecture: all SourcePackage: mono Title: package mono-gac 2.4.4~svn151842-1ubuntu4 failed to install/upgrade: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 9 zurück To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mono/+bug/764147/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

