I downloaded 1.86, and that seemed to fix the "serious error" crashes I was getting from 1.85. Now I finally found a download link for 1.87 at http://forums.swr-productions.com/index.php?showtopic=12177.
Is this worth installing?

Well it a public beta, things are still more likely to be buggy or inbalenced then a full on offical release.

Still, our small community has mostly adopted it and is using it for multiplayer/pvp.

So how is 1.87?
Its good, pretty good!
Come onboard and join us!