Hey,
Sorry for the confusion. You should be running the latest released version, unless you know what you're doing, and can stand having something broken between revisions, since the betas are in flux from revision to revision. Somet things might be fixed, but others might be broken. Like right now, auth is a little fishy. Last week, bids were in flux (and still are a bit). I try not to break too much between commits, but sometimes it's inevitable.
I've updated the download page to include better descriptions.
http://www.phpvms.net/downloads