You cannot run the features project as a standalone web app. It can only run in the context of mojoPortal.Web project. Set mojoPortal.Web as the startup project if you are using the source code. A post build event copies the needed files from mojoPortal.Features to the Web folder.
I'm also not sure you will have much luck using the source code with VS Express, you may qualify to get a free copy of VS 2010 Pro from the Web Site Spark program.
You should also avoid forking the code.