Lightroom Classic: Corrupting large PSD

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  • Updated 4 months ago
  • (Edited)
I've been getting many errors with newest update about errors loading files. Today, LR corrupted one of my 24078 x 150457 px PSD files (9.84GB). I saw the thumb load correctly but it was rendering a 1:1 preview to screen when the photo went to garbage. It's trashed now. 

Tried to open in PS, no go. Tried to open in Mac Preview and got pure green. 
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seanhoyt-dot-art

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Posted 5 months ago

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Rikk Flohr, Official Rep

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Lightroom only reads from your PSD, it does not write to your PSD. That would make the possibility that Lightroom corrupted the file very unlikely. The ability to view a thumbnail but not render the entire image does speak to a corrupted file. I suspect you may have a bad area on your hard drive where this ~10GB file lives. I would recommend checking out the hardware.
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Chris Fabregas

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This also happened to me last night. I could clearly see my thumbnail image however, when trying to open my file is PS it looked exactly like Seanhoytart-dot-arts image.
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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How big is your file? Could you post it for us to troubleshoot? Have you tried disabling Preferences > Performance... "Use Graphics Processor"?
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seanhoyt-dot-art

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Isn’t metadata written into a PSD? The corruption seemed to happen when the PSD was rendering from a blurry preview into a 1:1. Mid 1:1 render, I did an export and LR threw an error. I will see if I screenshot the error. Is it possible the headers were trashed? The file is still the same size.
(Edited)
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Rikk Flohr, Official Rep

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If you have Autowrite XMP data turned on in Preferences or if you use the manual Save Metadata to file, it will.  Most customers do not use either function. In anycase, my money is on hard drive failing. 
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seanhoyt-dot-art

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Drive appears to be fine. The only thing that makes sense is:

  1. Created the layered PSD in Photoshop, saved as PSD. PSD requirement = <2GB
  2. Imported into Lightroom. Early Feb 2020.
  3. Opened LR March 2020, tried to load the image and then export a smaller JPG render of the PSD. 
  4. Saw the low-res preview, saw the thumbnail. LR threw error, didn't screencap.
  5. PSD file ballooned to almost 10GB. (didn't catch that)
  6. PSD file now static garbage in LR, PS, and all other apps. 
I didn't change the file extension from PSB to PSD. It must have been created at < 2GB for me to import into LR. 

(Edited)
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Rikk Flohr, Official Rep

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That is good news that the drive appears OK.   Just as. a gut check, do you have any other PSDs on your drive that are > 2GB?
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seanhoyt-dot-art

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Just checked. All others are < 2GB. I might chalk this up to user error somehow, but I'm wary about dismissing it given the half dozen other game-stopping errors I'm running into this past week. Is this LR update bonked? 
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Rikk Flohr, Official Rep

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Not knowing what those 'game stoppers' are it is hard to comment but in general, this release is cleaner than average from the traffic I monitor. 
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seanhoyt-dot-art

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I don't have time today to detail but wanted to search to see if it's been documented yet: HDR merge stalls out. Auto-stacking isn't working correctly. BIG ONE: Import dialog is doing partial imports from SD card. Also: Crop tool takes 5-10 seconds to engage (probably because of how the photo is passed to GPU - Radeon VII?)
(Edited)
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Bruce Houstoun

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I thought there was a 4Gb limit to PSD files? Could it be doing something weird now that PSB files are supported?? And that file is also over the 65000pix per side?
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seanhoyt-dot-art

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Sorry, it should read: 24078 x 15047 px
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Robert Somrak, Champion

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What about the file size?   9.84GB is larger than what PSD supports.
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Todd Shaner, Champion

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There is a 16384 px long edge limit that prevents 1:1 previews from being built. Add your 'Me To' vote at the below report for this issue.

https://feedback.photoshop.com/photoshop_family/topics/lightroom-classic-preview-size-limit

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Victoria Bampton - Lightroom Queen, Champion

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Definitely a PSD file? Not a PSB or TIFF with the wrong extension?