I just installed the latest version 6 CC and when moving from library to the develop module the image turns to a blue rectangle with an x across the middle. I've checked updates and everything is current. I've checked may of my settings and all seems normal, and I've updated Camera RAW settings as well. Any clues would be very helpful. Running Lightroom CC 2015 on Windows 7..
In the preferences dialog, Performance tab, try turning off the GPU usage.
Thank you, ManiacJoe! This fixed the issue.