I mad some expirences with the trialversion of lightroom CC. Then I bought the Ligthroom 6 version. When i started Lightroom 6, I can see the previous of my fotos, but wenn I want to develope them, there is a blue screen with diagonal lines. Ligthroom can't find my Fotos. Wenn I want to load them again, I cant load them, because there are already the previous and the pictures, I want to load, are gray in the loading mask. Maybe my fotos get lost in the cloud. Is there a possibility to erase my previous to load them again from my Camera?
Go to Preferences, click on the Performance tab, then uncheck the box, this will eliminate the blue screen with diagonal lines so you can edit your photos