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Problems with photo previews - Library module

Forum|Forum|1 year ago
July 29, 2024
3 replies
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Hello, good evening.
I have a problem that I can't solve or find answers to.
I've uninstalled and reinstalled older and newer versions, I've changed the smart views, and I still have the same problem.
My photos, some of them, in the library module, the thumbnail disappears, the editing given to the photos disappears and they are only visible in the development module, but if I advance the photo, it disappears. The editing is recorded in the xml, because when I export it, it's edited, but I have reduced visibility and I can't make editing comparisons. 😞
Has anyone experienced this?
I'm about to delete the previews file, could this be a conflict with that file?

macOS

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Correct answer Per Berntsen

You have this icon on all the greyed out thumbnails, which means (according to the Lightroom Queen) that LrC is "checking if the previews are current, building new previews, or waiting for a better quality thumbnail to load."

So there is definitely a problem with your preview cache, try deleting the Previews.lrdata folder.

Bob Somrak

Brainiac

The update to LrC 13.3 had an upgrade of the Previews system. There are other reports of this happening on the forums. This may be a leftover from that upgrade.

https://community.adobe.com/t5/lightroom-classic-discussions/upgrading-catalog-with-13-3-loses-previews/m-p/14659320

M4 Pro Mac Mini. 48GB

Nuno FredericoAuthor

New Participant

Okay, so that's where the problem lies.

“Thank you adobe for warning users of this possibility.

Per BerntsenCorrect answer

Adobe Expert

You have this icon on all the greyed out thumbnails, which means (according to the Lightroom Queen) that LrC is "checking if the previews are current, building new previews, or waiting for a better quality thumbnail to load."

So there is definitely a problem with your preview cache, try deleting the Previews.lrdata folder.

Nuno FredericoAuthor

New Participant

Per Berntsen, yes I had already identified that, I even changed the preview settings to low, medium and high. But it doesn't solve it. Unfortunately. I've been working with LR for 12 years, and I've never had a problem like this.
Deleting the previews has been an option on the table, but I'm afraid something might go wrong, so I'm duplicating them in a different folder and trying to see if it works or not.

Per Berntsen

Adobe Expert

Deleting the preview cache is considered to be safe, I have never seen any reports about it going wrong.

But to be on the safe side, you can move it to a different location (or rename it) which will have the same effect as deleting it, causing previews to be rebuilt as you browse folders in Library. (you can also click on All photographs in the Catalog panel, select all, and go to Library > Previews > Build standard size previews, and leave it running overnight)

If anything should go wrong, you can always move it back, or rename it back to the original name.

L

Lumigraphics

Brainiac

You may need to rebuild/repair your catalog. But first, yes you can delete the previews folder and let LR recreate it.

Nuno FredericoAuthor

New Participant

Lumigraphics thanks for the suggestion.
We have two files, Smart previews and previews
I'm considering starting with the smaller one, it's 200mb and Previews is 400GB. 😞

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