Lightroom message "an error occurred when attempting to change modules"

has anyone sen this before?

Read this and see how you go: http://helpx.adobe.com/lightroom/kb/error-changing-modules-lightroom.html
Tony Jay

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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

Down loaded lightroom 5 and installed but won't open right. On opening Message "an error occurred when attempting to change modules"

Have a Mac Book Air with Lightroom 4 Full Download aboard. Just got an iMac. Wanted to load Lightroom 4 on iMac. Took the Adobe download file off the Mac Air and tried to load it on the iMac. It was successfull but on opening the message "an error occurred when attempting to change modules" appeared. I removed Lightroom 4 and went to Adobe orders and re-downloaded my original order to the iMac. Same effect. Bought full Lightroom 5 hoping to fix but the same message appeared. What's up! Any help?

Error changing modules | Lightroom

Have downloaded new Lightroom 5.4 from CC. When trying to launch am getting following error message and then Lightroom crashes: "an error occurred when attempting to change modules". Can't find a thread which relates to this error message.

Have downloaded new Lightroom 5.4 from CC. When trying to launch am getting following error message and then Lightroom crashes: "an error occurred when attempting to change modules". Can't find a thread which relates to this error message.

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.

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.

I'm getting a message "An error occurred when attempting to change modules"

Hi, I have just loaded LR CC on to my new iMac & I'm getting a message "An error occurred when attempting to change modules" I have used a Catalog from my Macbook stored on an external hard drive & there are no images, no panels & i can't access LR preferences, please help as i have images to process for clients! PLEASE HELP...

I have tried to look for download as it says but no down load, so i went to step 2 but i don't understand & can't find the files they are asking me to change. I am not super good with macs or any computer so I'm finding it hard to follow there instructions e.g. Preference file and other file locations | Lightroom 5.x I'm not sure if I'm looking for the rite areas of the iMac & i can't find what they are asking.

Just purchased Lightroom 5 from Best Buy, Registered, installed...but cannot open it due to the error message "An error occurred when attempting to change modules"..Please help.?.

error message don't allow me to open Lightroom 5. "An error occurred when attempting to change modules"...Please Help..!

I'm in the same situation exactly. I would like to delete, uninstall LR, and then reinstall to see if that will go anywhere. Will I loose my option for a second computer install later???

Lightroom 5 issue. error occurred when attempting to change modules

I installed lightroom 5.7.1 and an error appears " error occurred when attempting to change modules. And Lightroom does not work

Any answer to this?
I updated my LR to 5.7.1 and I get this message with no preferences folder.
I can't use Lightroom!! and I have a deadline
jim

Error Message: an error occurred when attempting to change modules

I have seen the link that addresses this problem. Lightroom is updated. I uninstalled Photomax. But the problem with Lightroom continues.

I have this same problem... clean install of the Lightroom trial on Leopard.
By clean, I mean it has not previously been installed- and after install the attempt to open the application results in the popup message about errors occuring when changing modules...
Once "Ok" is clicked the program completes load with a 'blank' screen..
In addition, the Program preferences panel will not load-
any attempt to access a module results in the error message be again presented.
I would hope the Adobe would give this some attention, can't expect to sell me on the app- if I can't get the trial to run?!/

When I open Lightroom I get an error message: An error occured when attempting to change modules

I'm on a MacBook Pro and I can't open Lightroom because of the error message. What now?

Hi Antonia, please see this page for help: Error changing modules | Lightroom

Error Message: An error occurred when attempting to change modules. Any ideas to this error?

I just downloaded the trial of LR 2.5. I get this message when I try to change modules and cannot import any files. Please Help. Thanks

What didn't work?
Error changing modules | Lightroom

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

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

I'm a first time Lightroom(via the Cloud) user (used Capture One before this) and just downloaded it today. The first thing I saw was this error message
"An error occurred when attempting to change modules."
I've updated it to 4.3 and I've tried all the other recommendations I found here:
http://helpx.adobe.com/lightroom/kb/error-changing-modules-lightroom.html
I don't know what Nik products are but I don't believe I have any.
I'm on a Mac running 10.6.8
Removed this preference file I found here:
http://helpx.adobe.com/lightroom/kb/preference-file-locations-lightroom-4.html
So frustrating! Please, can anyone help me???

I can only quote from the webpage that you already visited RE: Permission.
You need to have full permission for reading and writing for the folders and drives that Lr is using - particularly the folder that contains the catalog (i.e. the database Lr is working with).
If you have full permission try re-installing Lr. Un-install it via your OS. And re-install it.
Also, occasionally downloaded programs can become damaged during download - for instance when the download has been interrupted.
Before you re-install, I'd recommend that you download Lr again and use this second download for re-installation.
From the webpage (particularly read the part about Macs):
Solution 5: Set correct permissions on Lightroom folder inside Application Support
The Lightroom folder inside Application Support could have the wrong permissions preventing Lightroom from writing to it which can cause this error.
Navigate to the following folder: /Users/[user name]/Library/Application Support/Adobe/Lightroom
Highlight the Lightroom folder and chose File > Get Information
Under Sharing & Permission, verify that your have Read & Write Privileges. If not, click the padlock icon at the lower right, enter your password when prompted, then click the Read only entry and select Read & Write.
Important: (Mac OS) Apple made the user library folder hidden by default with the release of Mac OS X 10.7. If you need access to files in the hidden library folder to perform Adobe-related troubleshooting, see How to access hidden user library files.
Solution 6: Try a different user account.
Copy the Lightroom folder into a new user account or other existing account on your computer. Then, restart Lightroom. The Lightroom folder is in the following locations:
Windows XP: C:\Documents and Settings\[user name]\Application Data\Adobe\
Windows 7, Vista: [user name]\AppData\Roaming\Adobe\
Mac OS: [user name]/Library/Application Support/Adobe/
Important: (Mac OS) Apple made the user library folder hidden by default with the release of Mac OS X 10.7. If you need access to files in the hidden library folder to perform Adobe-related troubleshooting, see How to access hidden user library files.

An error occurred when attempting to change modules. Lightroom 5.2 on Mac

Lightroom 5.2 on a Mac....keeps saying 'An error occurred when attempting to change modules.

I FIGURED OUT HOW TO FIX THIS PROBLEM!
i\IIf you get the error message, “An error occurred when attempting to change modules” open up a brand new user account on your computer, name it something (Do not use Guest). Lightroom will be installed on both users, however everyone wants it to work on their main account, here is how you do it.
Click on the go menu at the top of the desktop in the new user profile and hold down option or the alt key. A tab will pop up that reads library. Click on it. A finder will appear, look for application support and click on it. Next, click adobe folder in Application Support and scroll down to Lightroom Copy this folder and paste it into the main user. HOW TO DO THIS? First copy the entire folder and then click computer in the go menu, Macintosh HD and then Users. Find your primary user account. In this case it would NOT be the one that looks like the house because you are on your alternative account! Nevertheless, find your main user account, click it and paste Lightroom folder into it. Doesn’t matter where you paste it, just know where it is.
NOW, log out of the alternative account and log into your primary user account and find the copied lightroom folder. Do the same thing mentioned above, Go menu, Computer, Macintosh HD, Users, but this time click the house tab. Find where you pasted the folder and paste it back in application support in the library via go menu. It will ask you to replace it. Hit yes. If it does not allow you to. Click get info on application support tab and make sure everyone is on read and write. Once pasted and replaced start up Lightroom.
IF NOTHING HAS WORKED FOR YOU DO THIS METHOD, IT WORKS!!

Lightroom CC5 would not launch "error occurred when attempting to change modules

I just installed Lightroom CC 5, and the program would not launch, I go an error message " An error occured when attempting to change modules"
please help.

Moving this discussion to the Photoshop Lightroom forum.

Lightroom message "an error occurred when attempting to change modules"

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