My advice is don't bother, you'll just encounter frustration. Mono has never become stable enough to reliably run mojoPortal and we have not made release packages for Mono in quite a while. There are always too many bugs in Mono and since Novell fired the Mono team they started a new business mainly focused on using Mono for building tools to build mobile apps for iphone and android so they are not really focused on making the ASP.NET stuff work better like they were when it was under Novell, and even when they were focused on it, it never quite got there and was never reliable for running mojoPortal.
Sorry for the bad news but that is the way it is.
Best,
Joe