reopen 458443 thanks I am afraid it is not fixed. There is a circular dependence problem, I think.
Basically, mono-gac cannot be configured because some files provided by libmono-addins0.2-cil are missing. On the other hand, libmono-addins0.2-cil fails because of mono-runtime, mono-runtime fails because of mono-gac, and now we come back to the line above. Here the output: A package failed to install. Trying to recover: Setting up mono-gac (1.2.6+dfsg-5) ... * Installing 1 assembly from libavahi1.0-cil into Mono * Installing 1 assembly from libgmime2.2-cil into Mono * Installing 1 assembly from libgsf0.0-cil into Mono * Installing 4 assemblies from libmono-addins0.2-cil into Mono * Installing 2 assemblies from libmono-addins-gui0.2-cil into Mono * Installing 1 assembly from libndesk-dbus1.0-cil into Mono * Installing 1 assembly from libndesk-dbus-glib1.0-cil into Mono * Installing 2 assemblies from libtaglib2.0-cil into Mono ! Assembly /usr/share/cli-common/policies.d/libmono-addins-gui0.2-cil/policy.0.2.Mono.Addins.Gui.dll does not exist ! Assembly /usr/share/cli-common/policies.d/libmono-addins0.2-cil/policy.0.2.Mono.Addins.dll does not exist ! Assembly /usr/share/cli-common/policies.d/libmono-addins0.2-cil/policy.0.2.Mono.Addins.Setup.dll does not exist dpkg: error processing mono-gac (--configure): subprocess post-installation script returned error exit status 3 dpkg: dependency problems prevent configuration of mono-runtime: mono-runtime depends on mono-gac (= 1.2.6+dfsg-5); however: Package mono-gac is not configured yet. dpkg: error processing mono-runtime (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libmono2.0-cil: libmono2.0-cil depends on mono-runtime (>= 1.1.8.1); however: Package mono-runtime is not configured yet. dpkg: error processing libmono2.0-cil (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libgconf2.0-cil: libgconf2.0-cil depends on mono-runtime (>= 1.0); however: Package mono-runtime is not configured yet. dpkg: error processing libgconf2.0-cil (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of beagle: beagle depends on libgconf2.0-cil (>= 2.16.0); however: Package libgconf2.0-cil is not configured yet. beagle depends on libmono2.0-cil (>= 1.2.6); however: Package libmono2.0-cil is not configured yet. beagle depends on mono-runtime (>= 1.1.8.1); however: Package mono-runtime is not configured yet. dpkg: error processing beagle (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libmono-addins0.2-cil: libmono-addins0.2-cil depends on mono-runtime (>= 1.0); however: Package mono-runtime is not configured yet. dpkg: error processing libmono-addins0.2-cil (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libmono1.0-cil: libmono1.0-cil depends on mono-runtime (>= 1.0); however: Package mono-runtime is not configured yet. dpkg: error processing libmono1.0-cil (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libmono-addins-gui0.2-cil : libmono-addins-gui0.2-cil depends on libmono-addins0.2-cil (>= 0.3); however: Package libmono-addins0.2-cil is not configured yet. libmono-addins-gui0.2-cil depends on libmono1.0-cil (>= 1.2.6); however: Package libmono1.0-cil is not configured yet. dpkg: error processing libmono-addins-gui0.2-cil (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libavahi1.0-cil: libavahi1.0-cil depends on libmono1.0-cil (>= 1.2.3); however: Package libmono1.0-cil is not configured yet. dpkg: error processing libavahi1.0-cil (--configure): dependency problems - leaving unconfigured