On a producion SP2010 site I've workflow, created by a predecessor, which when opening in de workflow designer shows a red bar on top with the error "Error Object reference not set to an instance of an object":
Other workflows just open fine in de designer. Also notice that in this screenshot the workflow's version is missing. Which does show in the Workflow Inventory (it's 7.0).
Is it safe to save/publish it in order to resolve this? Or does it require some other solution?
Kind regards,
Jean-Pierre