I get the error when I do any of the following:
Lightroom 5 has no problems opening the lightroom 5 catalog.
I'm running Mac OS X 10.10.5 and just upgraded lightroom 6 (not sure about the version since I cannot even start it).
Anybody know what might be causing this?
Uninstalling Lightroom, Photoshop, CC, and then reinstalled CC and Lightroom fixed the issue.