Update: Pushing to try and get a fix tested and pushed out in the next 2 hours. Apologies for any impact you are experiencing.
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Initial Update - Tues, Oct 30 2012 6:04 PM UTC
We are currently investigating an increased number of version update failures introduced by yesterday's monthly service update. Seems to be impacting users with Dev 10 or older clients. We've identified the root cause and are working on getting a fixed pushed to production as quick as possible.
Brian Renggli