Despite it is claimed in Adobe forum that Lightroom is fully compatible with OS Maverics on my MacBook Air IT IS NOT. A message "an error occurred while attempting to change modules" appears and I cannot go any further. Can anyone help?

Despite it is claimed in Adobe forum that Lightroom is fully compatible with OS Maverics on my MacBook Air IT IS NOT. A message "an error occurred while attempting to change modules" appears every time I try to open Lightroom. This happened immediately after upgrading to Mavericks. On my doughter's same machine Lightroom works perfectly. Can anyone help?

Surely the Adobe forums are the place for help with Adobe applications. The fact that the problem doesn't occur on your daughter's machine suggests that it's not an issue with Mavericks but a local problem on your own machine.

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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

??? 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.?.

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What didn't work?
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"An error occurred while attempting to change modules" message occurs whenever I try to run Lightroom. Can't use it. Can anyone give me any hint to solve the problem?

I found a solution in one of Apple forums. I will copy her post:
"  I was checking the differences between my normal admin User account/Library/Application Support/Adobe/Lightroom contents and the one on the clean other admin User folder in the same place on the G4 PB where Lightroom2 had launched normally and noticed that on the one that works there are a slew of folders (Develop Presets, Export Presets, External Editor Presets, Filename Templates, Filter Presets, etc etc). On the main admin account, there was only one, the first. So it seemed the install on that account didn't load all the needed info. I simply copied the missing folders from the account that worked into the Public folder, switched to my main account and added those missing folders in the proper place. Voilà!. Now Lightroom launches normally and I don't get the dreaded missing modules alert."
The problem with me is that I do not have a working copy of Lightroom, just 1 account in which it doesn't run and don't know where to copy the missing folders from. Please send some advice.

Surely the Adobe forums are the place for help with Adobe applications. The fact that the problem doesn't occur on your daughter's machine suggests that it's not an issue with Mavericks but a local problem on your own machine.

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.

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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.

Any ideas how to deal with "An error occurred when attempting to change modules."

Trying to use Lightroom 5; get this message every time I begin. "An error occurred when attempting to change modules," and that's all the further the app will go. Very sad, but WHAT IS THE ERROR? I've uninstalled and reinstalled it four or five times -- a couple through Creative Cloud/Application Manager and a couple by direct download .dmg. I've removed preferences, etc., reinstalled Creative Cloud Desktop, repaired permissions, appealed to the Lord, wished on a dandelion. Nothing.
Searching for the error I find no information anywhere in the last week or month, and beyond that nothing that applies to version 5.
I'm on a 2012 Macbook Air (Intel i5), OS 10.8.4, 4GB RAM, plenty of disk space and Camera Raw 8.1 installed if that matters.
Little help? Thanks.

See here: http://helpx.adobe.com/lightroom/kb/error-changing-modules-lightroom.html
See here for where to find the Preference file for your OS: http://helpx.adobe.com/lightroom/kb/preference-file-locations-lightroo m-4.html
See here for how to go about Replacing the Preference File: http://lightroomers.com/replacing-the-lightroom-preference-file/745/

Despite it is claimed in Adobe forum that Lightroom is fully compatible with OS Maverics on my MacBook Air IT IS NOT. A message "an error occurred while attempting to change modules" appears and I cannot go any further. Can anyone help?

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