I have created a very simple workflow that hard-codes some values into a dictionary, then writes the dictionary values to the status of the workflow.
When I publish and run it manually to my Sharepoint Online site (2013), it writes the first status, and then throws the following error: Activity in progress
*Retrying last request. Next attempt scheduled after 8/6/2013 11:00 AM. Details of last request: HTTP Unauthorized to https://[site].sharepoint.com/_vti_bin/client.svc/web/lists/getbyid(guid'4bf18897-b58b-4316-a269-dc3902c90cc3')*
I found an article online that told me to make sure Site Settings > Manage Site Features > Workflows can use app permissions is activated, but activating that feature didn't solve the problem.
Any idea what the problem is?