I have installed Adobe Lightroom CC. In the process of launching, a popup appears, that says: "AN INTERNAL ERROR HAS OCCURRED. Cannot create the required folder: /Users/(my user name)/Library/Application Support/Adobe/Lightroom/Develop Presets." So e

Question

I have installed Adobe Lightroom CC.  In the process of launching, a popup appears, that says:  "AN INTERNAL ERROR HAS OCCURRED.  Cannot create the required folder:  /Users/(my user name)/Library/Application Support/Adobe/Lightroom/Develop Presets."  So even though Lightroom CC is installed, it will not launch.  What do I need to do to allow it to launch?

Answer 1

The problem was solved today.  Here's the full story.  I'm a Mac user.  At first I installed Lightroom CC on my iMac (desktop).  I had this problem so I called Adobe, and was referred to a "special unit" .  After about an hour the tech solved it for me ... we did a screen sharing and she took control of my computer for a loooong time.  Because of language difficulties, at first I wondered if she knew what she was doing but she eventually solved it.  Although she couldn't explain exactly what she was doing, she summarized it by saying "it was a permissions problem."  I asked if I would have the same issue later when I installed it on my laptop (Macbook Air).  She said probably not.
But I did.  The same internal error popup arose on launch and launch did not complete on my laptop.  I tried chat but no joy so I eventually called Apple Care.  I had noticed that on my laptop (and the iMac for that matter), that there was no Library folder after my user name.  The Apple tech explained that the Library folder is actually there but it is hidden because it's very easy for users to do some very nasty things to their computer by going astray while in the Library folder.  The folder is actually there, but they hide it.  I did remember seeing that the tech helping me with my iMac had typed the work "Library" while she was controlling my computer.  Basically she had activated the hidden Library folder so she could open the path that Lightroom was trying to follow to create that "Develop Presets" folder.  For some reason, the inability to create that folder in the launch process was preventing launch from being completed.  The Apple tech said she didn't actually have to do that and activated the Library folder by use of the Go selection on the menu bar.  Anyway, once that complete path was replicated and opened, the next step was to go to the Lightroom Permissions field and add my user name to the user categories already there and enable "read and write" permissions to my user name.  Once done, I shut down my laptop, and then rebooted.  I launched Lightroom and then boom, voila, heavens to betsy, etc. it launched and suddenly a dismal weekend turned into a great one. 
I am not a geek, so I hope this makes some sense.  I also hope Lightroom launches again tomorrow and beyond!