Spanning Sync will be unavailable for several hours (Saturday, September 22) while we upgrade our back-end systems to add support for new features and address outstanding issues.
Watch this space for more details about new and improved functionality.
Update: Service has been restored of 24-Sep at 0400 GMT. If you run into any problems, please contact us at email@example.com.
If you're still seeing the "system maintenace" message, please quit and reopen System Perferences, then click on the Spanning Sync icon to update the status message.