Import images disappear in a flash

[melissam18699231]

I recently imported many image folders from my PC to my MacBook Pro via a LaCie external drive. I then transferred them to my WD Passport external drive. BUT, when I try to import images to Lightroom Classic, I'll see the usual thumbnails with check boxes for an instant, then they disappear! It doesn't matter if I try this from the external drive or my hard drive, the same thing happens. This only happens with the former PC images.

Although this is probably incidental to the problem, I did click on back up after the PC files were added. After several days and only a fractional import, I canceled out of the back up. Thanks in advance for the help!

[AxelMatt · Accepted solution]

Deactivate the GPU support and try again.

Adobe Lightroom GPU Troubleshooting and FAQ

Do you have installed the latest version of Lightroom?

[melissam18699231]

Yes, I think so. 7.3.1 and camera raw 10.3. I did notice just now that

there's a tiny arrow in the lower left corner of the toolbar icon.