Lightroom 5.2 Importing DNG Freezes

I am using Lightroom 5.2 on a Mac with Fusion Drive and always have issues importing DNG files into Lightroom. Any potential causes for this? I see the white bar showing it is importing but it never finishes and I end up having to close lightroom and try again. The images are stored on my desktop.

I don't have a ready answer, but in terms of troubleshooting, I would try this:
1. Start with the images in a known location (you mentioned above they are on your desktop, that's fine).
2. Import into Lightroom, and in the import dialog box, set it to "Add" the images to your catalog without moving them.
Does the import process finish?
If the import DOES work, then the problem may lie in the destination to which you're trying to copy the images when you import. Further troubleshooting should focus on the destination drive and what may be happening there.
If the import does NOT work by "Adding," then I recommend looking to eiher the images themselves (are they corrupted?) or to Lightroom (perhaps deleting preferences and restarting, or worst case a reinstallation).
mh++

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I installed Lightroom 5.2 and DNG 8.2 and when I try and import NEF files I am told they are not supported.

If your camera is very new, like a Nikon Df, then wait until the next version of LR/PS/ACR for support.
If your camera model is newer than the latest version of LR, perhaps a Nikon D610, then you need LR 5.3/ACR 8.3/DNGC8.3 which are all available in release-candidate status at Adobe Labs: http://labs.adobe.com/
If your camera is older and should be supported, then are you using and older Nikon Transfer or View NX that are corrupting your NEFs in a way that Adobe doesn’t recognize them? The solution for this is to not use the Nikon products that predate your camera and install versions that came with your camera or are newer than your camera. Or just use LR, itself, or the OS utilities like Finder and Explorer to copy the NEFs to your hard-drive.
If your files are corrupted by obsolete Nikon products, then there is a utility, here, that can undo the damage:
http://owl.phy.queensu.ca/~phil/exiftool/fix_corrupted_nef.html

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I even downloaded the latest Adobe DNG converter and converted all the NEF files to DNG then tried to import to lightroom - it didn't even recognise them??? What the...

Keith_Reeder wrote:
It's not a "wrong" error message - it's true, as far as it goes, and it's completely unrealistic to expect error messages to be fully diagnostic - they're a starting point.
Not wrong?
Let us have a look at the error message:
"The following files were not imported because they could not be read"
This clearly gives the user the impression that there is a reading error where you want to copy the files from. Is that the actual error?
No, the actual error is that the file could not be written at the destination.
It is possible that it is not factually wrong because Lightroom first make a failed copying attempt without giving an error message, then still assumes that the files have been copied and tries to import them, and THEN makes a failed import attempt from the destination and gives the error message. But that would never be anyone's first guess when they experience that error message.
A much better error message would be: "The following files were not imported because they could not be copied to the destination folder."

Lightroom will not import my photos. It did up to a week ago. I have changed cards and cameras (both worked two weeks ago). I can import the photos to Picasa and iPhoto

Lightroom will not import my photos. It did up to a week ago. I have changed cards and cameras (both worked two weeks ago). I can import the photos to Picasa and iPhoto. I get the following error message:
Some import operations were not performed.
The following files were not imported because they could not be read [followed by a list of the files I wanted to import]
Thumbnails show up. LR just will not import them.
Any idea what is going wrong?

If the Import button is not clickable, that means that Lightroom thinks you have no new photos to import (one possible reason is that they are duplicates)
So, you need to figure out why Lightroom thinks that. The way I would do this is to search your Library module for at least one of the photos, by file name. To do this, you would follow all 4 of these steps in sequence:
Click on All Photographs in the Catalog Panel on the left of the Library Module
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I keep getting the error: "lightroom could not import this catalog because of an unknown error" when trying to import from a catalog?

I have around 400,000 photos of 15 years so given the high number, I organized all my photos into 6 catalogs to avoid potential problems. All the photos and the catalogs are in a 4TB Seagate external hard drive. I use Adobe Lightroom 5 and I use a PC with the latest Windows Office 2013.
I wanted to have a NEW Catalog of all my rated 1 Star+ photos of all the years in a single Catalog. So I created what I called Star+ Catalog and I was told the best option is to import a Catalog at a time and given that there is no means to filter importing only Stared photos, I would import all the photos and then delete all the UnStared photos. I did that for Catalog Year 2014 but at the end gave me the message: "lightroom could not import this catalog because of an unknown error". It actually had imported around 40k photos from about 50k total. I tried again and again and every time I end up with the same thing. I created another new Catalog and stared from scratch and the same ting happened: the ONLY EXACT 40k or so photos were imported and the rest were not!! When I imported Catalog Year 2013 of around 45k photos, it worked perfectly. But when I imported Catalog Year 2012 of 35k photos, the same thing happened!!
I then tried exporting the needed photos to a new Catalog and that worked. But then when I try to import them again from my Master *+ Catalog I get the same error again!!
I also tried creating a new Master *+ Catalog and tried to import the Catalogs of each year into it and the same error happened again!!!
Any advice: 1) on how to solve this? and 2) if there is a better and easier way to create this Master Catalog of All Stared Photos of All my Catalogs?

This is a duplicate thread - see here

How to solve the error: "lightroom could not import this catalog because of an unknown error" when trying to "import from catalog"?

I have around 400,000 photos of 15 years so given the high number, I organized all my photos into 6 catalogs to avoid potential problems. All the photos and the catalogs are in a 4TB Seagate external hard drive. I use Adobe Lightroom 5 and I use a PC with the latest Windows Office 2013.
I wanted to have a NEW Catalog of all my rated 1 Star+ photos of all the years in a single Catalog. So I created what I called Star+ Catalog and I was told the best option is to import a Catalog at a time and given that there is no means to filter importing only Stared photos, I would import all the photos and then delete all the UnStared photos. I did that for Catalog Year 2014 but at the end gave me the message: "lightroom could not import this catalog because of an unknown error". It actually had imported around 40k photos from about 50k total. I tried again and again and every time I end up with the same thing. I created another new Catalog and stared from scratch and the same ting happened: the ONLY EXACT 40k or so photos were imported and the rest were not!! When I imported Catalog Year 2013 of around 45k photos, it worked perfectly. But when I imported Catalog Year 2012 of 35k photos, the same thing happened!!
Any advice: 1) on how to solve this? and 2) if there is a better and easier way to create this Master Catalog of All Stared Photos of All my Catalogs?

OK, my starting point is that LR can happily contain 400000+ photos, and it's a mistake to create a 1 star plus catalogue as you suggest. Instead, I'd recommend you create a master catalogue of all your photos, which you can then query however you want - 2 star, or a certain keyword, or with "xyz" in the title etc.
If you are intent on going that way, you could try a slight change from what you've done so far. Instead of trying to import an entire catalogue and then delete no-star pictures, take the 2014 and 2012 catalogues and select only the 1 star photos. Then do an Export as Catalog for these items, and import the 2014-1star and 2012-1star into your new catalogue. That may get you past the problem images which I suspect are the problem.
If that doesn't work, or if you follow my initial advice, you're going to need to identify the image where the failure occurs. You may have a corrupt image file, and replacing it from your backup may be sufficient to resolve the problem. Alternatively, it may be a corrupt record in the catalogue, and in this case it may be sufficient to remove the image from the catalogue and import it again. You might try selecting everything in the 2014 catalogue and seeing if you can do an Export as Catalog, creating a clean 2014, and deleting 2014's previews folder might also get rid of a potential problem. Something else is to try the Export as Catalog for images 1-40000, then a second Export as Catalog for images 40002-50k.
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John

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{quote:title=Mark P A wrote:}How can you import DNG files into Aperture 2 that have been processed in Bridge without having to make the adjustments again?{quote}
You can't. The raw conversion made by ACR can not be read by Aperture and vice versa. The only reason you can read the settings in the DNG- file on another computer with ACR is that the sidecar file is embedded in the DNG. If you had not converted to DNG, then you had to export the XML- sidecar file as well if you wanted ACR on the other computer read the settings made to the raw file.
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Today I imported DNGs from pictures I've created with my 350D through the last year or so. Some of these work completely fine, but others won't show the full-resolution image; they only show a small 256 x 171 thumbnail version.
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UPDATE
My solution works but I would suggest a few things to avoid a problem I encountered (see THE PROBLEM below):
- Copy your Aperture Library File to the desktop (after backing it up to your vault), then reload Aperture. Your Library should now be empty.
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THE PROBLEM
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The problem seemed to be with DNGs created with the newer versions of the Windows DNG Converter. Converting them with the latest Mac DNG Converter (v3.4) did not resolve the issue.
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There seems to be no way of telling which DNG converter version was used to create an individual DNG although I found that it was related to all DNGs after a certain date (ie. the date I started using the newer DNG converter!)
I hope this of help to everyone and that it has answered the question.
Cheers,
Paul Martin
www.paulnika.com

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Lightroom could not import this catalog because of an unknown error.

OS 10.5.8
(gb mem
I have recently exported a catalog from my main database (on a mac) with about 700 photos. Including negative files
We opened the catalog on a PC machine in the same version of lightroom. 3.5 camera raw 6.5. The images were given new keywords and then exported as a Catalog including Negative files.
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Lightroom 5.2 Importing DNG Freezes

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