As Andy wrote, if reverting doesn’t fix your issue, your issue is different, and we would need you to write to support@topazlabs.com so we can investigate.
Thanks
I selected more than 10 photos, selected “Apply Autopilot”, then selected “Export images”. Once it gets past 10 or so the application fails.
The autopilot is doing an upscale and recover faces.
Hi.
There’s currently a problem with Topaz Photo AI 4.0.2 and Batch Processing the advice, is to rollback to the previous version 4.0.1 until this issue is resolved there’ll possibly be a fix with the next release
Here’s the link to Photo AI 4.0.1 for both Windows and Mac
Windows
https://downloads.topazlabs.com/deploy/TopazPhotoAI/4.0.1/TopazPhotoAI-4.0.1.msi
Mac
https://downloads.topazlabs.com/deploy/TopazPhotoAI/4.0.1/TopazPhotoAI-4.0.1.pkg
Here’s a link for more information and ask to be notified when a fix is available
Hope this helps
@mikel.matthews
I added you to this thread so you receive the news when we release a fix for the batch processing issue.
For now, please revert to the previous version:
Photo AI v4.0.1 - Mac: Download
Thank you. I have reverted to the earlier version.
Thanks,
Mike
Mikel Matthews
mikel.matthews@gmail.com
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Our team has released Photo AI v4.0.3 
This patch includes a fix for the batch processing issues you were having on your Mac.
You can download this update by using the in-app update option found in the top right corner of your application window or you can use the link below 
-
Photo AI | v4.0.3 | MacOS Installer
- Note: There is no need to uninstall the current version you are on.
You can find a full listing of fixes and improvements to the latest release on our Topaz Labs Community Forums page at the following link:
Let us know if any issues occur during the installation or if you encounter a problem while exploring the improvements!
Happy Editing 
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