Was your existing catalog converted when you first started the new version?
Yes the catalogue was converted on first start-up
Did you at any time import the photos into the new catalog?
No. I just opened the converted Catalogue with LR CC.
When I converted from 1 to 2 and from 2 to 3 and so on there were no problems before.
Today I opened LR CC again ... I had to use 5 to finish my work.
It seems not to work at all. It only generates thumbs when I click it.
I will look for other post why LR CC does not work well.
I'm not sure now it is the failed conversion al all.
I did today's update. Did not resolve my problem.
I found out that the photo's I imported with LR CC don't have the problems I have with the photo's I imported with previous versions.
When I select a folder I imported with LR CC it shows all thumbs normally.
When I select a folder generated with previous versions it only generates thumbs when I click the thumb frame.
It does show the labels I used before but the developments are still lost.