Also please make sure that Lightroom is updated to the latest version Lightroom CC 2015.5
- Go to Lightroom > Preferences.
- Also please Go to the Preferences > Performance Tab, and uncheck "Use Graphics Processor "
- Restart Lightroom and see if it works.
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Have you turned off GPU acceleration in Lightroom preferences to see if that makes a difference?
Thanks for the quick and correct answer Tanuj (and Jim) My LR version is correct and after unchecking graphics processor develop mode now works.
You are Welcome, Glad to help.