Submitted this to support about 2 weeks ago. After a lot of back and forth I received the following:
“Thank you for getting back to me. I went ahead and escalated this ticket to our engineers over the weekend for them to look at. They have gotten back to me and told me the issue has been corrected. Please try publishing your SmartApp once more and let me know if you continue running into this error message. Thank you!”
Since that time I’ve not encountered the error again. However, I responded on my support ticket with a link to this thread.