My Lightroom 5 works fine on my Windows (10) desktop, but when I try to run it on my MacBook Air (OS El Capitan), I get the "Error when changing modules" message and can't do anything. I've tried everything suggested for the problem on the Adobe website and uninstalled/reinstalled Lightroom. I don't want to try installing as a different user because I need access to everything as a single user. Is there a fix for this?
Go to the following folder: /Users/[user name]/Library/Application Support/Adobe/Lightroom
Then Press Command I, click on the little lock icon, go to permissions, allow read and write access to all.
*Make sure that you go to the user library not the system library.