Sorry for this inconvenience.
Please uninstall all adobe applications and manually delete these files/folder.
/Applications/.AdobePatchFiles (hidden, use Go > Go to Folder command)
/Library/Application Support/FLEXnet Publisher/
Note : Please take back up of your catalog and presets
After this install creative cloud app and then install photoshop first and then lightroom.
Let us know if that helps.
Same problem today cropped up in my Mac (El Capitain). What are the Mac equivalents? Thanks
Are all the options under edit in grayed out ?
Yes they are. Thanks for responding.
In the preferences what is the secondary option in external editing tab ?
The secondary preference is "custom" and my DXO files are listed there. Just for fun I changed it to an old copy of Elements, no change - all the options are greyed out.
Can you try that in another admin account ?
Mac have permission issues.