Yup. I encountered this problem. Solved it by screwing around complexly enough that I'm not sure what/how it was solved.
I'm not using these tools professionally. If I were, this would be absolutely unacceptable. The Creative Cloud needs work.
- Mr. Dogs
Fickle is a rather delicate phrase to be using...I spend two days and 8 hours of screen sharing with Adobe Cust. Suppt. with my LR 5.6 CC upgrade.
They did a total of three un/reinstalls, done in different ways to get it right and...having all my images as they should be.