Sven Co-op 4.07 Update was released today, which includes a number of fixes and improvements, a new donors list, and more. You'll need either 4.0B or 4.06 installed.
Download it here (and add any new mirrors you find).
Sorry if the site theme looks bad. It's become a bloated mess that is too hard to maintain. A new one is being made from scratch and should be ready in a few days.