"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.

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