After installing Lightroom 3, we get a message saying "An Error occurred when attempting to change modules"

After installing Lightroom 3, we get a message saying "An error occured when attempting to change modules"
The Lightroom background comes up but I don't have the side information and no arrow to get it.
Can anybody help.
Debbie

Best guess is a permissions problem although you haven't mentioned what operating system you are using.
Have a look at: Error changing modules | Lightroom

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When opening up Light room 5 i get a msg saying, :an error occurred when attempting to change modules:

when opening up Light room 5 i get a msg saying, :an error occurred when attempting to change modules:

Hi Shakenimages,
Welcome to Adobe Forums
There is a separate Forums regarding Light room, you can post the query there & the experts will reply you on this.
Use the link mentioned below to do so.
Photoshop Lightroom
Let us know if that helps!
Thanks
Garima

I get an error message when trying to begin with Lightroom (trial on Creative Coud) that says, "An error occured when attempting to change modules." What does that mean?

I just downloaded the trial version and can't see anything that says initiate or upload to get images - also keep getting that darned error message. I use MAC OS X 10.7.5

Here are some suggestions:
Error changing modules | Lightroom

I Just installed Crative Cloud Lightroom try-version but when i open the program it say "An error occurred when attempting to change modules." ?

I Just installed Crative Cloud Lightroom try-version but when i open the program it say "An error occurred when attempting to change modules." ?

Try giving permission to Lightroom folder under
/Users/[user name]/Library/Application Support/Adobe
Steps
Click on Finder and on the menu bar ( top side the of the screen) click on Go > Go to,folder
In the window type exactly ~/Library and click on Go
Open Application Support > Adobe and right click on Lightroom folder and select get info
Under sharing and permission Click on lock and unlock it
Click on + add your current user name and administrator if not added
Then give Read and Write permission for Admin, system, everyone and (your user name)
Click on gear icon and choose apply to enclosed item
Then Click on Lock
Launch Lightroom and check.

Can't import photos into new LR5 installation, no import option, just error message saying "an error occurred while attempting to change modules"

This is a new MacBook with a new CC LR5 installation. There is however no menu choice allowing me to import photos. Np right or left panels at all. When the program opens I get an error message saying there was an error changing modules.

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.

I just downloaded LR to my IMAC ( i am new to apple products) and when I tried to open LR a alert pops up saying "an error occurred when attempting to change modules." I can't get anything to work in LR but Photoshop works fine.

if anyone has any ideas to why this is happening I would love your help.

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

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!!

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

Lightroom trial doesn't show complete menu selections or import button. Also get error message on launch: An error occurred when attempting to change modules. I am unable to find/see the following file to try renaming the SLCache and SLStore files: Sy

Lightroom trial doesn't show complete menu selections or import button. Also get error message on launch: An error occurred when attempting to change modules. I am unable to find/see the following file to try renaming the SLCache and SLStore files: System Library/Application Support/Adobe. Any ideas? I only have 16 days left on the trial and have been unable to get it to work on my Macbook Pro. This is all I am seeing after Lightroom opens. Thanks!

Thanks to both of you for attempting to help. I finally figured out what was wrong . . . it was a Permissions problem. Very frustrating, but after scouring the troubleshooting tips I finally found the one that solved my problem. I had to add a User and give it Read/Write privileges to Lightroom. The file I had to add the User to was Hidden on my Mac, so that added an even bigger challenge to the mystery. Only a few days left on my trial version! I hope I have time to try it out!

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.

??? 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.

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???

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

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

Purchased Light Room 5, installed, registered .. but keep getting this screen "An error occurred when attempting to change modules. ... OK" ?? WTF? ?

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Can anyone help?
For such a big company .. there isn't any chat option to get to someone to talk to !!!

Just because you are the only user on the computer doesn't mean you are the administrator.
Also, the fact that you are being asked to re-enter your serial number each time you start means that it is not being remembered because something is either preventing it from being written to you disk or (less likely) something is erasing it. This does suggest that you lack certain permissions to make changes to your computer. Not only to save your serial number, but to have access to the Lightroom files needed to change modules (they are just plug-ins within Lightroom).
Try creating a new user account and run Lightroom from there (making sure that it is part of the Administrator group).
To get to chat support, you have to choose the options:

After installing Lightroom 3, we get a message saying "An Error occurred when attempting to change modules"

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