Unfortunately, the S2 world is a bit corrupted.  Spawn itself is almost gone, and there are other chunks throughout the world that were missing with the download, and were rebuilt as new chunks with the oriiginal blocks missing.  We will make sure this doens't happen going forward.

There are fragmented files for those who may not be able to download a 45gb file all at once.  To combine them, I recommend, you will need to use something like winzip or 7zip.  You should be able to simply right click the file marked .001, and click combine (at least thats how it works in 7zip)