Remember, to play Sven Co-op you need to own Half-Life (NOT HL:Source). To play Opposing Force maps in Sven Co-op, you need to own Opposing Force. Both are currently on special.
(If you're able to provide permanent mirrors for the files, please e-mail the links to mirrors@svencoop.com or post them in this forum thread. Thanks!)
While downloading, why not check out the Manual? Also remember to grab the Land of Legends map pack! Server ops: When running a 4.6 dedicated server, you must add "-num_edicts 3072" to your HLDS commandline or Launch Options.
Due to other responsibilities, I'm afraid this may be the last Sven Co-op release I'm heavily involved in. Many thanks to all the team members, testers and other contributors who made this release possible, and to all of the fans for their support over the years!! Sniper and the others still have a lot of plans for the next version, so look forward to that.
Merry Christmas, everyone!
-Sven
SC4.6 Release Party! 24 December, 2011 | by Sven Viking
Just to let everyone know that a release party is planned on the Sven Co-op IRC channel at about this time (click this link). Download links will be available there earlier than on the news, so you might want to drop in.
irc.gamesurge.net #svencoop
SC4.6 Release Date, Changelog & Screens! 22 December, 2011 | by Sven Viking
Buy the Humble Indie Bundle 4 and beat Cave Story's secret final boss, so that I can live vicariously through you.
Download Land of Legends for Sven Co-op 4.x! LoL was originally released as a stand-alone mod running on SC3.0 code, but has now been converted to a Sven Co-op map pack. You can play it right now in SC4.5, or wait for the release and play it in 4.6.
Quick note: All Half-Life games 75% off on Steam today! (and also 50% off until January). HL1 Anthology is at $3.74USD -- maybe grab a copy for a friend? Though Blue Shift co-op support isn't included with the upcoming release, it's moving towards completion. OpFor support has been improved in SC4.6.
Current News
While downloading, why not check out the 
