Lightroom 3.3 Corrupt Thumbnail Previews

I have just noticed a problem that I have not encountered until I upgraded to 3.3. After I export my images as jpegs, the thumbnail previews are not complete for a few of the files. I get about two corrupt thumbnails in Windows Explorer out of 100 exported images. Here is a screenshot showing what they look like.
http://dl.dropbox.com/u/1426292/Capture.JPG
The images are fine when I open the files, but the previews are not complete. I would like to fix it so my clients don't get "broken" thumbnail views. Has anyone else seen this problem? Suggestions are welcomed. Thanks.
Kevin

13. Apr 7, 2011 7:29 PM in response to: EJ Printer
Re: Lightroom 3.3 Corrupt Thumbnail Previews
LR 3.3 and PS 4 ext. The original was a camera phone jpeg.
No, I have only VERY rarely had this happen. I don't use this workflow. I was trouble shooting an issue for someone that is having a problem. I was quite surprised to see it happen. The computer is an i7 running Vista 64.
Your fix would require ALL previews to be rebuilt. I have a catalog of over 80,000 images. I don't see that as a reasonable fix. If it was a problem, I'd rather try deleting image from catalog and then sync the folder again and see if that fixed it. No need to trash a bunch of good previews for one bad apple. : ) especially since it's just a test jpeg image. I suspect a read/write time with image size and such playing a role.
EJ

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Lightroom thumbnail previews

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13. Apr 7, 2011 7:29 PM in response to: EJ Printer
Re: Lightroom 3.3 Corrupt Thumbnail Previews
LR 3.3 and PS 4 ext. The original was a camera phone jpeg.
No, I have only VERY rarely had this happen. I don't use this workflow. I was trouble shooting an issue for someone that is having a problem. I was quite surprised to see it happen. The computer is an i7 running Vista 64.
Your fix would require ALL previews to be rebuilt. I have a catalog of over 80,000 images. I don't see that as a reasonable fix. If it was a problem, I'd rather try deleting image from catalog and then sync the folder again and see if that fixed it. No need to trash a bunch of good previews for one bad apple. : ) especially since it's just a test jpeg image. I suspect a read/write time with image size and such playing a role.
EJ

Nef file corrupted but preview looks fine

Hi everyone,
That's the first time I get an error when opening an image in Photoshop and I dont really know what to do to get it to work. Its actually almost half my sd card that got corrupted, the preview image looks normal but as soon as I try to open it to start working on it, I get this error:
"Could not complete your request because an unexpected end-of-file was encountered."
Same thing happen in Lightroom, I even tried Picasa and always the same problem, preview looks normal but the NEF file does not open (Photoshop) Cant make changes (Lightroom) Open with plenty of lines, colors, etc (Picasa)
Is there a way to get past this error in Photoshop or at least be able to work on the preview files ???
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The preview you refer to is probably the jpg image the camera makes of image, as a camera can not display a raw image. This is called the embedded thumbnail.
So the NEF is probably hosed. This usually happens when a card is inserted that has been formatted with another camera. It is wise to format your card, in the camera, before each use.
The other posibility is that the transfer of imagaes from the card became corrupted. The safest way is to transfer with a USB card reader.

I would like the ability to save a thumbnail preview for use by the OS on image export.

Hello,
I have been using Lightroom for about three years and one of the many features I would like to see is the ability to save a thumbnail for the image while exporting an image. This is an option available in other leading software, and also happens when you save an image in Photoshop. It isn't a huge issue when using a Mac because you have the option for the finder to force an image preview. It is however an issue when your client uses Windows since the OS doesn't allow the user to force a thumbnail preview.
The client is king, especially with the economy and market the way that it is. If the client wants thumbnails on their images in their OS, the photographer needs to be able to deliver. I don't expect myself or any other photographer to have to open files in Photoshop and save them to force a thumbnail for the image.
This software is in no way as expensive as Photoshop and it does have amazing features, but it is also not cheap and is intended for working professionals.

Your original links were ok, two JPGs and one PNG. BTW,the resizing wasn't necessary because the warning about it is only for viewing the photo in the message. You can always click on the photo and see the full-sized version, as long as it doesn't exceed the filesize limit, of course.
On my Windows 7, both JPGs show a Windows Picture Viewer program icon when set to the default settings, and both JPGs show a thumbnail icon when the icon-size is increased. This is a function of Windows, not the contents of the files, as far as I can tell.
No thumbnail Icons using the default view:
Thumbnail icons when switching to the next larger sized icons:
On the Mac the two images act differently, but you're asking for Mac-specific things to occur, and Adobe may choose to not do it based on it not being different on Windows.
For what Windows scenario does the PS-saved JPG show a thumbnail-icon instead of a program-icon when the LR-saved one shows only the program icon. I'm not asking about the Mac where your screenshot shows the difference, I'm asking about Windows. Is it only when you e-mail pictures or is it on the customer's hard-drive, somehow, and what is the customer using the view the images?

Corrupted thumbnails??

I use Lightroom 2 to import photos onto my Mac Pro (Snow Leopard OS), then move to Adobe Bridge (most current version) to browse and choose which to open into Photoshop CS4. On a recent shoot, about 5 to 10% of the images (taken on three different compact flash cards) from my Canon 5D Mark II had corrupted thumbnails in Bridge. They either showed no image, just the CR2 RAW logo, or the image showed with a significant portion of it blocked by random colored vertical and horizontal lines. The photos all were fine in Lightroom. I closed Bridge, threw away the cache, and reopened and all was well.
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I closed
Bridge, threw away the cache, and reopened and all was well.
You first could have used the option to Purge cache for folder using the
Tools/cache menu instead of deleting the whole cache folder.
I use Lightroom 2 to import photos onto my Mac Pro (Snow Leopard OS), then
move to Adobe Bridge (most current version) to browse and choose which to open
into Photoshop CS4.
If you only use LR to import your files why not use Bridge for this?, You
can add several options for it in Adobe Photo Downloader that is in Bridge
(get photo's from camera). Explore the advanced option window.
My question is what is going on? Getting rid of my cache is a pain, because I
have to wait many minutes for many files to reappear in Bridge. Is there a way
to prevent this from happening again?
It might have been a corrupt folder but it might have also been something
else. I tried using LR for import files (include to convert as DNG as I'm
used to for all my Raw files) but have no problems with viewing them in
Bridge. Personally I prefer the renaming options in the Photo Downloader but
that's my opinion )
Could it have been related to the fact
that I imported 700 or so very large files (RAW files from a 21 megapixel
camera are 25 to 30 MB each)? Thanks!!
I really doubt that, (I have the same files, did not try this amount but do
work with this amount, and more in Bridge without this problems) unless you
did something in between with removing card from reader in an incorrect way
or closed one of the apps during caching but still can't imagine that to be
the cause, or if you copied the files manual to an other location, etc. etc.
Nevertheless you might consider to refresh the preferences for Bridge (hold
down option key while restarting Bridge and choose reset preferences)

Corrupt Thumbnails

We have been using Aperture for a long time and had no problems. We used to have hard drives plugged into our computers directly and would import our images so they were within the library.
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OS of the computer running Aperture: 10.4.11
Aperture version is: 2.1.4
Camera: Canon 5D Mark II and Raw files are CR2
We have had no problems with the 5D on this computer before, its just decided to happen now that we are running it over the network. Do you think it is because the computer with the hard drive on is not compatible with these files? Even though it is just a storage device. Also, its only 1 in around 10 files that become corrupt?!

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Could you please let get me the following details as well:
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Thumbnail Preview for RAW Files Not Appearing in Bridge

Hello,
I'm running Adobe Bridge 5.1 on a Mac OS 10.9.2 (recently upgraded to Maverick) and I can no longer see thumbnail previews for my RAW files (which include .NEF, .CR2 and .RAF) though as of a few days ago this wasn't a problem. Not sure if it's related to the Maverick upgrade... but FYI, I do see thumbnail previews for .TIFF and .JPEG files.
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Please ensure that you mark a question as Answered once you receive a satisfactory response. This helps people in future when searching and helps prevent the same questions being asked multiple times.

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Lightroom 3.3 Corrupt Thumbnail Previews

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