I got them from the normal repositories, I don't use any other repositories. I finally solved it by completely removing monodevelop and then running: apt-get install mono apt-get install mono-develop
I think mono-develop needs something that comes with mono. -- Monodevelop not starting after install https://launchpad.net/bugs/55344 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs