Cannot insert action into sharepoint designer workflow

Question

I’m creating a List Workflow in SharePoint Designer 2010. In the first step I have a conditional under which I am trying to add a Start Approval Process step:
When I try to insert the next line, the blinking orange line pauses, then resumes blinking. I get no error, but the action is never entered:
This is for a workflow on the dev server. I'm attempting to mimic this working workflow in my own dev environment:

Any ideas?

Answer 1

Apparently, SharePoint Designer 2010 needed to be restarted more than one time, and needed to wait a number of hours (approx. 15 hrs). This action is working now.