Aggregate v0.9.8 is now available for download here:
http://code.google.com/p/opendatakit/downloads/list
This fixes the Google Spreadsheets publishing failures that began over the
weekend.
It also includes new functionality to enable the new Briefcase standalone
application to download all the submissions from a 0.9.8 server to your
local machine and to then upload that data into an ODK Aggregate 1.0
instance. This will be the migration path for migrating everyone to ODK
Aggregate 1.0. More details will be forthcoming with the updated Briefcase
application release.