I had this problem on my laptop (E: mono-gac: subprocess post- installation script returned error exit status 3). This was solved by purging packages libmono-addins0.2-cil and libmono-addins-gui0.2-cil and then reinstalling mono-gac.
-- package mono-gac 1.2.6+dfsg-5ubuntu2 failed to install/upgrade: https://bugs.launchpad.net/bugs/185677 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs