They just posted this on Twitter:
Still didn't work for me. I just tried again. Deleted the old setup files, including the OculusSetup-DownloadCache, downloaded the OculusSetup app around 30 minutes ago, re-downloaded the 5 GB, just got the "Restart Computer, sorry we encountered an error" message.
It looks like you're new here. If you want to get involved, click one of these buttons!