"An error occurred attempting to change modules"

I posted on this before but now notice that I was in the wrong place - the Lr3 forum, so lets try again. I'm using Lr 2.5 on a PPC platform and all of a sudden this message "An error etc etc", strangely enough I can access the slideshow, print and web modules but cannot access Library or Develop.
I have tried all the suggested cures I can find - a fresh Lr download, deleting a .plist file, changing to a different (or a new) catalog, optimizing the database etc. I have even tried using Time Machine to revert to the contents of the Lightroom folder as it existed last week prior to the arrival of the problem. There have been no changes to my setup - all files are on the internal drive except for the images which are on an external drive.
I had thought that maybe my database had been corrupted but I'm still getting the same message when I create a new blank catalog. Has anyone experienced the same problem, or can perhaps suggest a solution?
Thanks

I regret to say that there has been no assistance from Adobe on this one - however thanks to finding something in the wider Lightroom community I've been able to solve the problem and describe the solution here solely for the possible benefit of others down the road. (At least so far it seems to have solved the issue for me)
The advice I came across said the following: You have to delete the adobe lightroom folder in the library/app support and the users/lib/pref/com.adobe files too… then startup lightroom and it’ll be fine.
I'd been using Lr for a while and so had accumulated various presets and templates which I didn't want to lose so rather than delete it, I copied the Lightroom folder within Application Support to a new location. Sure enought on re-start Lr rebuilt the files it needed, and it worked properly.
That left me with the job of gradually returning the various folders containing the presets etc, and re-starting Lr each time. The notorious error message only returned when the 'External Editor Presets' folder was copied over. After further research I deleted 2 specific presets from that folder, and so far we seem to be back to normal working. Curious that neither preset was a recent install, so why it should suddently be an issue is strange............but as long as all modules are working again.......

Similar Messages

I have Lightroom 3 and have installed it on my Retina iMac running Yosemite. It will not show me any of the modules..error when attempting to change modules.. and keeps asking for my serial number every time. Is it compatible?

I have Lightroom 3 and have installed it on my Retina iMac running Yosemite. It will not show me any of the modules..error when attempting to change modules.. and keeps asking for my serial number every time. Is it compatible?
David

This is a duplicate thread - see here

Another "An error occurred when attempting to change modules" error

Hello all:
After using Adobe Photoshop Lightroom on Mac OSX trouble free for the past 6 months, I opened up Lightroom today and received the following error: "An error occurred when attempting to change modules." I had not made any changes in between when it worked normally and when the error started to occur. I beleive the last thing I did before this error occurred was to go into the Print Module.
Other information--I keep all my RAW .NEF files on an external Firewire (800) 750 GB drive. This is on Mac OS X 10.5 running Adobe Photoshop Lightroom 1.3 and also with 1.4.1. I'm running an iMac 20" with dual-core 2.2 Ghz Intel processors and 4 GB of RAM. I have around 25k images total.
When I noticed this problem, I was on Lightroom 1.3. I immediately upgraded to 1.4.1, which did not solve the problem. I have also tried many suggestions in the forums including uninstalling the application and removing the .plist file.
I thought I had come up with a solution by creating a new catalog, then importing the former into it. While this seems to work immediately after the import process, as soon as I close it, the problem manifests itself again.
More details that may or (likely) may not help:
- Going to the Develop and Print Modules gives me no problems. However, when I click on Library, Slideshow, or Web, I see the error.
- I upgraded my Mac to the latest patch level after observing this error to no avail.
So it looks like my choices are to create a new file and reimport every single time, or lose all of the work I've done for the past 6 months on thousands of images.
Can anyone please help???? I promise to post the solution when we fix this darn thing so others may benefit. I'd be happy to run through any troubleshooting that y'all would suggest outside of switching to a Canon.
Thanks!!!!
Matt

I'd first check for the existence of a file ending in .lock, which should be present when LR is in use, but if it exists when LR is quit, it can cause problems, and should be deleted.
Please post back your results.

I have Lightroom 5 installed on my MacBook Air but when I try to open the program I receive the message "An error occurred when attempting to change modules". I uninstalled, emptied trash and re-installed but I continue to get the same message.

I have Lightroom 5 installed on my iMac which I downloaded (uploaded?) to my MacBook Air (via wi-fi) but unlike the iMac, I'm unable to use the program on the MacBook Air. When I open the program on the iMac and click 'file', (as people using the program would know) there are 21 options - import pics, export, etc, etc - however, in the version on the MacBook Air, opening 'file' gives me four options - New Catalogue, Open Catalogue, Page Setup and Printer - and with that comes the pop-up message "An error occurred when attempting to change modules". Any ideas please?

A forum thread from 3 years ago talking about LR 1.x which had this problem seems to need permissions fixed or new folders created with the corrected permissions. You might try doing a repair permissions for your user and/or run LR as an administrator user. I am a PC person so cannot tell you exactly how to do that.
https://forums.adobe.com/message/1457020

An error occurred when attempting to change modules.--when i log in as a guest program works fine but when i log in onb my account that pops up

An error occurred when attempting to change modules. this comes up on my account on my mac but not when guest account ?

I fixed the problem myself, no response in chat nor phone (1 hour in hold an no answer) here's the link, step # 5 saved me! Here's the link seems to be a very common problem, hope it works for you! Error changing modules | Lightroom

Lightroom 4: An error occurred when attempting to change modules.

I downloaded Lightroom 4 a few days ago and installed it on my MacBook Pro. Everything worked great. I thought it would overwrite Lightroom 3, but it didn't. So Lightroom 3 is still installed, but I haven't opened it since I installed Lightroom 4.
I downloaded Lightroom 4.3 this morning and installed it on the same MacBook Pro. Using my MacBook Pro and a second monitor, I opened Lightroom 4.3 and worked on some photos. Everything worked great.
Then I began watching a slideshow in the Lightroom 4.3 slideshow module on the second monitor with my MacBook Pro in the library module. During the slideshow I clicked on the slideshow module on my MacBook Pro and got this error message:
An error occurred when attempting to change modules.
Now I can’t get into the slideshow module. I just get the error message.
I moved the preferences file to the trash and reopened Lightroom 4 but lost color labels, so I put it back in the preferences folder.
Thanks for your help

I called Adobe and let them fiddle online with Lightroom on my MacBook Pro. The Adobe tech claims I have a corrupt permissions file. He told me to contact Apple and have them rebuild my permissions file.
When I contacted Apple, the tech said to startup my MackBook Pro with the option key held down until the first screen appears. Then click on: Recovery HD, arrow, Language, Disk Utility, Macintosh HD, Repair Disk Permissions.
I did this three times, but some permissions were not repaired. Another Apple tech then suggested I bring my MackBook Pro to a Macintosh authorized repair shop, and have them repair my permissions file. I asked if I can buy Norton Utilities or a similar program and do it myself. The Apple tech said yes, but an authorized repair person will know which permissions to repair and which ones not to touch.
Unless someone on this forum can tell me how to do this repair myself, I’ll get it repaired next week. And, I’ll post the results as soon as I can.

An error occurred when attempting to change modules Lightroom 5 CC

I've seen other users pose this question but haven't seen any solutions that work for me. I get the error: "An error occurred when attempting to change modules" when I open up Lightroom 5 on one user, but on another user it opens up fine. I've tried moving and trashing preferences, uninstalling and reinstalling the program. It's the same whether I open an existing catalog or try to open Lightroom while creating a new project. Any help would be greatly appreciated. This occured after updating to Mavericks on a 2011 iMac. All other Creative Cloud apps seem to have installed just fine.

Hi 99jon,
Many thanks for that. Had been going through this list yesterday and now again today:
Ref Solution 1: Lightroom is at its latest update
Ref Solution 2: It's interesting how I cannot find the Preferences file anywhere on my mac. (new mac pro, OS 10/9.2) . . .
Ref Solution 3: Lightroom doesn't allow me to do anything after the error message appears
Ref Solution 4: don't have any Nik Software plug-ins
Ref Solution 5: checked permissions and changed all to "Read & Write" - makes no difference
Ref Solution 6: I don't have a different user account on my mac.
Not sure what else to do.

An error occurred when attempting to change modules.

Loaded LR on my iMac, tried to copy & use a catalogue from W7 P/C. Now get "An error occurred when attempting to change modules." when opening LR. Tried a variety of on-line suggestions, HELP. NB too much hassle with all the other apps to start a new user with such as Adobe and Microsoft.
George

Hi, I¹ve been through it again to ensure I¹ve not forgot things. Completely
removed Lightroom and all files I can find, etc and reloaded. Some tedious
result. Step 6 is too time consuming at the moment for me, too many things
on the go since I¹m about to go on holiday and on return I shall need
Lightroom on this iMac. Any clues? This iMac had Mavericks from new,
uploaded to Yosemite and then loaded Photoshop CC, Lightroom etc and get
this damned problem.
Reading around the web I¹m not the only one with this issue, to suggest a
new user a/c is a soft option without resolving the issue.
I hope an expert from Adobe can resolve this,
Regards, George (retired IT Manager and IT Systems Project Manager)

An error occurred when attempting to change modules. message after my regist numb?

after I put my regist number appears this message= An error occurred when attempting to change modules.
and I cannot use my lightroom
What to do?

http://helpx.adobe.com/lightroom/kb/error-changing-modules-lightroom.html

An error occurred while attempting to change modules

I installed Lightroom and when starting the program I get, "An error occurred while attempting to change modules." I get this message within the program when clicking on any of the top right menu items. Also, importing a photo is not listed in the file menu. I deleted the preference file and Lightroom folder in my user preference and reinstalled. I tried many reinstalls, it still has reoccurring error message. Anyone now a fix? I'm running 10.5 on a Core Duo with 2meg of RAM on a 320 gig hard drive with lots of room.

For what it is worth, I was unable to change to the Web and Print modules, and I was also unable to record new presets (though I had successfully done it many times before) though I could still use already created ones. I was baffled, but found a workaround using hints from this and other forums. Much thanks to those who provided me with a starting point as I never would have figured this out on my own.
My wife is a separate user on the same computer, and I tried switching our catalogues and preference files, ... nada. Looking at her folder structure under user/library/application support/adobe/lightroom, she had folders for Web Templates, Web Galleries, and Print Templates but I didn't. So, simply copying her folders (not creating new ones of the same name, which may still have worked) into my own lightroom directory worked.
Where I screwed up initially was tryiong to use my own presets under her install of lightroom and then creating new ones (which worked) but then trying to import them back into mine. I had the new presets working under my own install, but still couldn't create new ones under my own setup. Finally, I realized that it was the "Develop Presets" folder under my own install that was in some way corrupted and copied her Develop Presets folder into my own install and every thing was fixed. I could even copy the subfolders from my own Develop Presets folder directly back in without issue.
Hope this helps someone.

An error occurred while attempting to change modules while starting up LR 4.1. New install on a new

An error occurred while attempting to change modules while starting up LR 4.1. New install on a new MBP first time trying to start up

Just a guess, but since everything is new, perhaps you have some sort of permissions problem.
Make sure your user has write access to all the locations mentioned in this link:
http://helpx.adobe.com/lightroom/kb/preference-file-locations-lightroom-4.html
Hal

"an error occurred while attempting to change modules" when launching lightroom

I get the message "an error occurred while attempting to change modules" when I launch the app on my mac.
Every other adobe app works like Photoshop
I have followed all the troubling shooting steps in the link below, not one of them makes anything different. Except I tried the last one. I created a new account, simply logged in and launched the app and everything ran normally. No problem. However it doesn't say what to do if that works it just says try it.
Error changing modules | Lightroom
Obviously this means its going to be an issue with a support file in the one user account but what one?
I also can't un install lightroom either, when I go to the creative cloud plug in on my menu bar the uninstall says its unavailable but the others are fine.
Any ideas?

I just found the answer for me.
I did step 5 on this support article:
Troubleshoot unexpected behavior | User account-specific | Adobe software | Mac OS
It is to repair the permissions on the hidden Library folders.

I have a mac, and am trying to install lightroom 3.6, everything says it has installed ok, but when trying to open I get this message...An error occurred when attempting to change modules.

anybody have any idea?

https://forums.adobe.com/search.jspa?q=error+occurred+when+attempting+to+change+modules&pl ace=%2Fplaces%2F1383621&depth=…

??? I just installed Lightroom 5 from Amazon for my Mac with 10.10.1 software. When I open it I get: "An error occurred when attempting to change modules". It won't import photos and has no side panels under Library. What should I do?

I just installed Lightroom 5 from Amazon for my Mac with 10.10.1 software. When I open it I get: "An error occurred when attempting to change modules". It won't import photos and has no side panels under Library. What should I do?

I Nearly bought from Amazon too but I found a thread from Adobe stating that the only recognized outlet for lightoom is themselves and other outlets serial numbers will not be guaranteed.
THat at was sufficient for me to buy direct from Adobe, hope you get it sorted.

Encountered an error when attempting to open Lightroom for the first time. Went to Lightroom Help and searched for the error "An error occurred when attempting to change modules". Non of the solutions helped. what now?

Encountered an error when attempting to open Lightroom for the first time. Went to Lightroom Help and searched for the error "An error occurred when attempting to change modules". Non of the solutions helped. What now?

I am getting this error message as well. I have just downloaded Lightroom recently. I try to click on Lightroom / preferences....and nothing happens. I tried to uninstall and it is greyed out so I can't do that either. Suggestions? Please help?

"An error occurred attempting to change modules"

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