I have the same problem. I used Photo AI in photoshop within batch processing. I find out that the problem is that the save button is enabled before the photo is updated by the AI algorithm.
On the moment that the save button is active the program want to try a save of the image in Photoshop. The result is that is will hang in a queue. Resume does not work. You must cancel it.
This has cost me a lot of time to do 100 photos manually. Hopefully it is solved in the next upgrade
If you uninstall and re-install a revision prior to the 2.1.2 update, it will work fine.
It will not have all the updates, but it will run in an action.