Thanks. Ultimately, John S. from your shop (Topaz) got back to me and provided a video that showed how I needed to copy the TopazPhotoAI.8bf file into another Adobe common folder with Windows Explorer:
John’s solution (per the video) ended up working. To avoid this type of situation in the future, Topaz should automatically install the “TopazPhotoAI.8bf” file in the correct location so that the user doesn’t have to blindly run into this situation when upgrading Photo AI.
As for my Affinity Photo/Photo AI problem, it went away after reinstalling Photo AI and rebooting my computer.
Re the Photo AI plugin locking up PE when there is a crash, one solution would be to put a close button/icon on the popup that displays while Photo AI is loading so that no matter what happens (success or failure loading the plugin), a user can close Photo AI from the popup window (instead of having to kill the PE process.
Thanks for your assistance. As indicated earlier, I LOVE the Photo AI output, and don’t want to try to find an alternative.