P: Won't start. Ask to change permission of folders, but that doesn't solve.

with sudo i was able to fix the above two problems, and now Lightroom starts again.

sudo chown -R myusername <and the path as above>

In my case, after downloading the latest version on my macBook Air, no problems.

However, on my iMac, I received the dreaded permissions error.  After reading the various fixes, I just:  Clicked the Action pop-up menu , then choose “Apply to enclosed items.  Everything worked fine after that.  

I tried the Terminal fix and it did not work for me.

Lightroom also works well with the new HDR program Aurora http://aurorahdr.com

The script runs, but does not fix the problem. It gives these two errors. Replaced my username with ***.

chown: ***/Library/Application Support/Adobe//AAMUpdater/1.0/aamui.log: Operation not permitted

chown: ***/Library/Application Support/Adobe//Lightroom/Modules: Operation not permitted

Hi for those with little success so far.... I went through adobe and their on line technical chat. You can let them take control of your screen if you are happy to do this. It took 2 different techs well over 90 mins but threy finally sorted my issue with the folder permissions, error 16 and both lightroom and photoshp cc. Only showing as trial versions. If it took 2 techs this amount of time I donat think i would have been able to sort it myself..

Hi,

I wrote a shell script that automates the restoration of ownership, read/write permission and the removing of ACL from the set of Adobe user folders and its subfolders. I've shared the zipped shell script at my Creative Cloud sync folder http://adobe.ly/22tjZX8 . Here is how you will use the script:

1. Download the zip from the above shared link. Unzip it by select and double-clicking the zip file using the mouse. There will appear a shell script file named "LightroomCorrectPermission.sh" sitting next to the zip file that you have just downloaded, which typically is located at /Users/your login user name/Downloads/LightroomCorrectPermission.zip.

2. Type "Terminal" in the Spotlight search box and launch Mac OSX's Terminal app

3. From the Finder, drag-n-drop the uncompressed shell script file "LightroomCorrectPermission.sh" at step 1 onto the Terminal window. You will typically see the following in the Terminal window, press Enter to run the shell script:

/Users/your login user name/Downloads/LightroomCorrectPermission.sh

When prompted, enter your Mac OS X login password (assume it is an account with admin privilege). If everything works well, you should be able to launch Lightroom successfully.

Hope this helps.

Simon

There is some success in https://getsatisfaction.com/photoshop_family/topics/lightroom-cc-2015-5-lightroom-6-5-camera-raw-dng-converter-9-5-now-available after fixing not only the r/w permission on the folders, but also make sure that you are the actual owner of the Adobe folders and all its enclosed items.

The same Apple help https://support.apple.com/kb/PH21997?locale=en_US&viewlocale=en_US also describes how to fix the ownership.

When the items in the folders are not owned by the current user, the only workaround is to grant read/write access to everyone. If you correct the ownership to all the enclosed item (making sure you own all of them) and correct the r/w permission for the current user, the issue should be resolved.

We are still investigating the issue. If you're blocked, you can try to revert to the CC 2015.4/6.4 for the time being.

1. Uninstall CC 2015.5/6.5 from your machine
2. Go to https://helpx.adobe.com/lightroom/kb/lightroom-downloads.html, download and install Lr 6.0.
3. Then download and install the CC 2015.4/6.4 patch on top of Lr 6.0.

So......when will an update be out for this bug?? I'm not as competent in trouble shooting a workaround as some of you on this site (should we have to be?), but I know that I have tried the prescribed fixes, and none of them work for me. I'm running OS X 10.10.5. I'm a working professional photographer (as I'm sure a lot here are) and we NEED a fix fast! Anyone try Capture One Lately? 

Thanks Stefan for the info. 

One of the things that we're looking into in the next update is to make such permission check optional (customer can turn it off and continue regardless). The permission issue might still be there but Lightroom can continue the launch, which might or might not cause actual problems. In Lr 6.5, we still see some reports of crashes due the folder permission issues (when it is not corrected), but at least customer know what is going on at the surface instead of just getting a blind crash.

Hi Simon
I also called adobe Germany Phone support today and they told me they are flooded with this, italso varies vastly. some can get it solved with a new admin, some by just doing the terminal command and some like me need a global readwrite right to the library. It ́s a big mess.