Register-SPWorkflowService throws InvalidData, DirectoryNotFoundException on 15TEMPLATEWorkflowActivities directory

I was setting up a new SharePoint 2013 environment and hit this issue when registering workflow manager with SharePoint 2013.  Thought I’d share this out so that it helps others who might run into this issue. Here’s the sequence of my installation. 1. Installed SharePoint 2013 RTM + SP1 and then SharePoint 2013 November CU…