I have a Windows 8.1 machine that needs to edit workflows within SharePoint Designer (2013 SP1).
Whenever a workflow is clicked on one of two errors is received:
Server side activities have been updated. You need to restart SharePoint Designer to use the updated version of activities.
Windows Workflow Foundation, part of .Net Framework 3.0 must be installed to use this feature.
Restarting does nothing to correct the errors.
Several blogs or support sites have recommended deleting temporary files which hasn't helped. I have reinstalled SharePoint Designer as well.
Another Windows 7 machine is also having the same issue with the same site.
It seems to be an issue with the site. The site is hosted on SharePoint Online.