After the Lightroom 2015.5 (march 2016) update, Lightroom doesn't work anymore. Ask to change permission of folders in library manually. I did as told and it still doesn't work...
@Karl, this is different from the file deletion issues. Please allow me to explain: At this point, I have found no evidence that Lightroom 6.5 is "screwing" up the the user's folder permissions. Lightroom 6.5 just reports the folder permission issue as it finds it. It would have been better if Lightroom 6.5 would allow the affected customers to continue launching at their own risk without correcting the folder permission issues first (We know user folder permission issues could cause Lightroom and other Adobe application to not function correctly in some mysterious circumstances in the past (See https://feedback.photoshop.com/photoshop_family/topics/lr-6-4-mac-os-x-10-11-3-hangs-freezes-crashes... as an example).
Lightroom's installer does NOT install files into the user folders. The Lightroom specific folders under the Lightroom preset folders are created on-demand on the first launch of Lightroom after the install. So if the customer first launched Lightroom signed in with 'root' user, then those folders would be owned by 'root'. I have also seen some 3rd party plug-in developers install their plug-ins files into the Lightroom user folders, that still had the 'root' ownership. There could also be other file permissions changes that some customer performed on the machines themselves in the time past. Mac OS X 10.11 El Capitan has recently changed how 'root' user works (see https://support.apple.com/en-us/HT204899), it might have added confusion to the topic. The file permission issue is historical and requires customer's attention and fix it. Otherwise, there might be a problem in waiting if customers do not have permission to update the Lightroom folders that they own.
As I stressed earlier, Lightroom 6.5 could have done a better job to allow the customer to continue the launch sequence by skipping the permission check. This will be implemented in the next Lightroom update. However, Lightroom 6.5 cannot be blamed for the root cause. It just reports the problem.
I installed the latest lightroom cc upgrade and now the program won't open and I receive a message saying the program has encountered permission issues. Ive followed the recommended checks but can't resolve the issue.