I see he same issue as @Technowix was just going to report. Plugins that are upgradable for me seem to want to downgrade to previous version.
Wasnt able to re log in via twitter
Trying to login that way just bounced up my 'ne1up' Twitter real quick, then redirected back here to a 404 page. So I had to register...which was super easy and why I love this forum so much.
Yikes! That sounds like a serious issue. We'll get right on that...
@psychobunny, some relation to the Github SSO plugin you worked on?
Maybe interesting to do that to users 1 out've every 4 or so times, bounce them to an oops-404/register page.