[Craig Mederios]

Hi Nathan, I specifically created an account here to tell you thank you. Had the same issue and trashing the prefs on start-up seemed to do the trick.
A couple things to note, in my case anyway:
1. Deleting my prefs also deleted my saved workspace layouts, not the biggest deal, but something to note.
2. I had to delete old (finished) renders in the queue before the error finally went away, so perhaps try this first before trashing prefs (see aforementioned losing of saved workspaces.)

Hope that helps anyone else having this apparently brand-new issue, and thanks again Nathan.