I am getting this error in my Run Log when I go to drag my Automator action in to the workflow. The action doesn’t show up and eventually it exits giving this error. I’ve restored my code to what it was before the error was happening but it still happens. I’ve “Cleaned all targets” and restarted Xcode but nothing seems to work. HELP?!?!
For those of you experiencing this issue; I’ve discovered that I had a corrupted nib file. Remaking this (however much of a pain it was) fixed this particular issue in this particular context.