Photoshop’s 3D features will be removed in future updates. Users working with 3D are encouraged to explore Adobe’s new Substance 3D collection, which represents the next generation of 3D tools from Adobe.
Additional details on the discontinuation of Photoshop’s 3D features can be found here: Photoshop 3D | Common questions around discontinued 3D features.
Learn how to fix, "Photoshop could not complete your request because of a program error" when opening or saving files
When opening or saving image files, you get one of the following errors:
Grant Photoshop "Full Disk Access" in macOS System Preferences
To change this preference on your Mac, choose Apple menu > System Preferences > Security & Privacy > then click Privacy.
See Change Privacy preferences on Mac
Hide all layers in the Layers panel then Save again
Click or click and drag across the visibility icon on each of the layers to hide them.
Reinstall your graphics driver
Restore Photoshop's default preferences
Turn off GPU acceleration
If this step helps, perform further GPU troubleshooting.
Download and decompress the user-diagnostics.zip file to a local folder you will be able to locate
With the zip archive decompressed, copy the "user-diagnostic" folder to the Photoshop Plug-Ins folder at the following locations:
Select “Photoshop User Diagnostics” from the Plugins menu.
In the panel that appears, make sure “copy error stacks to clipboard” is checked.
Perform your steps that reproduce the Program Error
When the Program Error appears, click Ok. When the dialog is dismissed, more details on the error are added to your clipboard for easy pasting.