Lightroom :: Camera Raw Cache Always Empty?
Dec 7, 2013
Quick question about Camera Raw Cache: Mine is empty. Always.
I've read that the Develop module stores information on photos it opens in the Camera Raw Cache, while the Library module stores its previews in the LRDATA directory adjacent to the Lightroom Catalog. I've also read that the former can be stored anywhere and is limited to a size specified in Preferences, while the latter must accompany the Catalog file and has no cap on its size.
So why is my Camera Raw Cache always empty? I go in and out of the Develop module, edit, switch among photos within Develop, view images at 1:1 and larger within Develop, etc. Shouldn't that cause cache entries to be generated in the Camera Raw Cache? I've tried moving my Camera Raw Cache from within Preferences, and I have the size of the cache set to 30 GB with plenty of room on the drive, but it's still always empty.
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Nov 4, 2012
I have 1142 Camera Raw cache files. Do I need them all or can some be deleted?
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Aug 17, 2013
I'm not doing video ( I dound that in the drop down menu.) I want to empty the photoshop cache.
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Apr 17, 2009
Wondering if there is any guidance on retention of .dat files in the folder called UserLocal SettingsApplication DataCameraRawCache. I have close to 1 GB of .dat files in that folder, and am looking for ways to keep down the storage in my O/S (boot) partition.
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Sep 5, 2012
I have the preference set to keep 1:1 cache files for 30 days, and the max cache size is set to 30gb. The cache file has never yet approached this size. I've gone through the trouble of having LR work in the background to create previews for whole collections. After this process, performance is as snappy as I'd expect; images load immediately and there's no more than a one second lag when zooming in to 1:1. But hours or days later, on the same collections, when there has been no change made to the files, everything slows down. The wheels spin as LR loads each image preview, even at reduced fit-to-screen size. Processor utilization zooms to near 100% during these loads, so it seems LR is rendering the views all over again.
What happened to my cached previews?
Running a mac pro, 8 core xeon 2.8ghz, 18gb ram, 3tb 7200rpm data drive that's about 10% full.
The delay happens when in develop mode. In Library mode the pre-made previews are available and load instantly. Is this just the way things are?
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Mar 3, 2014
Here's the text:
1. Should Media Cache Files and Media Cache Database be in separate folders? Does it matter?
2. Can I open an "in progress' project from P Pro CS4 with CC P Pro and continue editing?
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Mar 22, 2014
I keep trying to open LR5 and it gives me an error message that says it encountered a problem with the preview cache and needs to shut down, and it will attempt to fix the problem next time I open LR 5. It keeps happening and won't allow me to open LR5 at all.
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Dec 2, 2012
the software have have a problem with the preview cache and closed it everytime after startup? (Win7 64Bit)
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Dec 3, 2013
How do I hide the cache folders in adobe bridge and Ligthroom?
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Dec 28, 2011
I'm an amateur moving up to LR 3 and have been trying to learn this program by reading the LR3 book by Scott Kelby. He shows that the Camera Calibration feature has some settings for specific cameras yet the drop down menu has none listed. I've upgraded to 3.6 and the images were copied from raw to DNG.
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Apr 7, 2014
I am relatively new to Lightroom. I have imported Panasonic Lumix DMC-FZ200 raw (.RW2) files into Lightroom 5.3. When I go into the Develop module under the Camera Calibration the only profile that shows up is Adobe Standard. My camera is supported according to the Adobe web site.
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Mar 15, 2014
I have a preview cache error on start up. This persists even on re-start and LR will not progress beyond this point. I have tried a repair and a re-install but no joy. I also did a clean of the PC after to clear any registry errors too. Still the same happening. Photoshop works fine.
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Mar 10, 2014
i was trying to move some files via LR.I've researched and found that everyone else was able to fix their issue by moving the preview database out of LR, tried that but it doesn't fix the problem.I've moved all files except the new preview and catalog (only a single catalog) database from the Picture/ Lightroom folder.I've rebooted the computer several times and tried opening LR, still no joy.The size of my catalog is 3.8GBThe size of the preview is 6.5GB (77,186 files in 45,745 folders).This is a new install from scratch on a new PC,
Specs are:
Intel i7 4770
32GB memory
2 x 250GB SSD drive in RAID 1 for OS and apps
1 x 6TB SATA HDD for images in a RAID 5
1 x 5.3TB SATA HDD for final images in a RAID 5
I've had nothing but issues with this system since day 1, images transferred and they do not show up correcting inthe individual folders (especially 2012). Total image count is about 320,000
Seems to me that LR cannot handle the numbers although LR3.6 was a lot stable this version is shakey all over the place.
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Feb 3, 2014
I've browsed a few previous forum questions and answers and it appears I might need to find my catalog and delete my preview cache file(s). However, I cannot find where these files are stored. A few of the forum responses said to go into Lightroom edit/preferences to find where these files are stored, but I cannot get into Lightroom. When I open it, it gives me the error message and I can't seem to get into edit to find where these files are stored.
Also, I'm relatively new to Lightroom (been using it for a little over a month, mostly just editing and not much for cataloging and organizing my photos)
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Sep 11, 2013
I have a macbook pro running osx 10.8.4 and LR 4.4 installed. When I try to change the cache size in the LR Preferences from 1.0 gig to 10 it doesn't "stick". I change it, close the pref. menu and when I reopen it to check, it's back to 1.0 How can I change this and make it stay?
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Feb 6, 2014
LR will not run after receiving an error message regarding preview cache and needs to quit. What do I do. I have the Cloud monthly subscription. Photoshop works fine. Have also reinstalled.
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Jul 20, 2013
i have lightroom 4 last version 64bit and w7
can i avoid to create video cache?
i don't import video files and i don't have video files in my catalog
but i have 3gb of cache here
c:UsersUserAppDataLocalAdobeLightroomCachesVideo
in the folder
c:UsersUserAppDataLocalAdobeLightroomCachesVideoMedia Cache Files
c:UsersUserAppDataLocalAdobeLightroomCachesVideoMedia Cache
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Jan 27, 2012
Recently I am getting a message 'LR encountered an error when reading from ots preview cache and needs to close'.This is a regular occurance (>6 times today), is there a fix?
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Mar 29, 2014
When I try to open LR4 I get the message that LR has encountered an error reading the preview cache. I can't find the preview.irdata files to delete or clear.
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Sep 6, 2013
I am running LR 5.0 on OS X 10.8.4 and everything was fine until a couple of days ago when I started getting this error message when backing up Lightroom. I have repeatedly restarted Lightroom, restarted my iMac, and nothing gets fixed. Do I even have a functional backup?
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Oct 14, 2012
i have found the folder and am going to delete it however i need to know if this is deleted witll all the photos i have in lightroom that have not been exported be deleted?
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Sep 3, 2013
getting problem when starting up LIghtroom. Error says 'error when loading preview cache. Close and Lightroom will try and fix the problem, but nothing happens and now have the same error constantly.
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Apr 1, 2012
Every time I use LR4, it encounters an error at some point in the first 10 minutes of use. It always says, "Lightroom encountered an error when reading from it's preview cache and needs to quit".
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Mar 17, 2014
I have a problem with Lightroom 5. When starting Lighroom, I get the mention "Lightroom has found a failure while reading the preview cache, and will be closed". The problem stays, also when I start Lightroom again. Now I can't use Lightroom anymore and I can't reach my Lighroomphoto's.
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Jul 31, 2013
I have somehow deleted pictures from my hard drive and all i have left is the cache folder. There are several .dat files ( 1 gig worth ) in the folder but I can't seem to extract them. Is there any way to extract these .dat files to their original files?
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Apr 23, 2013
I use an external hard drive for my photographs. Recently I've been getting "Lightroom encountered an error when reading from its preview cache and needs to shut down" message. It says LR will attempt to fix this problem the next time it launches, but once I click ok, the program closes and when I restart it the same message comes up.I use LR4 and am working on a Macbook.
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Nov 17, 2013
LR encountered an error at start up when reading from it's preview cache.
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Oct 31, 2013
I'm a web developer currently slicing an illustrator file for web graphics. Some of the icons and images have shadows, lights, etc, and it's impossible to simply see by a naked eye which pixels contains some shade or nearly transparent color and which doesn't.
It would be extremely useful if I could somehow easily differentiate between empty and non-empty pixels, so I wouldn't miss any when slicing.
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Jan 12, 2014
Lightroom 5.3 has been working fine, but now after locking up while trying to do 1:1 previews it will not open and gives an error box about cannot address preview cache. I have deleted and re-installed with no dice.
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Mar 20, 2014
LR locked up and I had to force close. Now everytime I try to open I get and error message 'LR encountered-an error when reading from it's preview cache and needs to quit'
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Dec 10, 2011
I usually import my pictures and ask LR to generate standard previews at the same time, which is fine for a full screen preview.When going to loupe view and zooming, LR inevitably processes a 1:1 view. This is fine for me. However, after scrolling on other pictures and going back to the same exact picture which has already been 1:1 rendered, LR displays the 'Loading' message and actually proceed to another 1:1 rendering. It doesn't take advantage of the cache even though 1. dat files are present in the ACR cache directory 2. I flushed the cache and tried again 3. I set a higher limit (20 GB).I'm running LR 3.5 on Windows 7 x64.
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