That isn't the link for the Stygian Abyss fork, that is the link for the Mondain's Legacy fork.
Regardless, check your client again because those problems are caused by an incompatibility between the server and the client. You're either:
1 - Using an old client with an updated server
2 - Using a new client with an old server, or
3 - You haven't configured the server properly - If you are running your shard on a client version before 7.0.9.0 you need to make sure that "MultiComponentList.PostHSFormat = false; " otherwise set it to true - in MapDefinitions.cs.
Also, since you are using Mondain's Legacy code, you won't get most of the SA stuff. You want to instead download the SA fork (which includes the ML stuff also):
http://sa-project.googlecode.com/svn/trunk
You want to use something like Tortoise SVN to download it, then EXPORT a working copy. There are some threads in the forums as to how to use Tortoise SVN and how to compile your server.