Using LIghtroom 5, Mac OS-X 10.10, I encountered the same no-render issue in Library, randomly. Moving to Develop, the images rendered, but back to Library was back to no rendering of the images.
"Fixed" it by restarting Lightroom.
Using LIghtroom 5, Mac OS-X 10.10, I encountered the same no-render issue in Library, randomly. Moving to Develop, the images rendered, but back to Library was back to no rendering of the images.
"Fixed" it by restarting Lightroom.