OK so I’ve been running Photo AI from Photoshop Elements 2021 since it was first released. This morning I was working on some images and on the 3rd one PSE said there was a problem starting Photo AI. Restarting PSE and Photo AI was no longer in the list of Plugins. Reinstalled Photo AI still not there. It does still appear in the list of plugins for Paintshop Pro.
After re-installing I noticed that TopazPhotoAI.8bf was in the root of my plugins folder. But there isn’t a TopazPhotoAI_x64.8bf file.