I purchased Lightroom 6 online yesterday, and tried to install it on my iMac running OS X Yosemite 10.10.5.
When I start the software two error windows pop up:
An internal error has occurred. Cannot create the required folder: then points to xxx/Lightroom/Develop Presets.
An error occurred when attempting to change modules.
The software .dmg was downloaded from my own account at Adobe, and initiated with the register key provided by Adobe in my account.
Has anyone experienced this issue before, and what would be the solution?
You need to Change the Permission for the Adobe folder in both Library.
>>Go to the Location: ~/Library/Application Support/Adobe
Refer the link and try Solution 5: Error changing modules
Let us know if it helps.
The change in permissions in the folder /Lightroom fixed the problem (not in /Adobe folder)