To clear this error, you will need to do the following:
Enable multi-user mode in Sage (if you have not done so already)
Close Sage
Unpublish any pending invoices/bills
Open your PC's task manager
Click on the Processes tab
Right-click on Autoentry.Service in the list, and click End Task
Go to the Services tab in your task manager
Right-click on Autoentry.DesktopSync.Service and click Start/Restart
Go back to the AutoEntry site, and republish your invoices/bills
Please note: The error will not clear until an invoice/bill has been successfully republished.