Turn off the Use Graphics Processor feature. It is the Performance section of the Preferences.
So please open Lightroom , and then click on Preferences.
Once the Preferences Window opens up, go to the Performance Tab, and please make sure the option for "Use Graphic Processor" is unchecked.
After unchecking the option please restart Lightroom, and it should take care of the issue.
Please let me know if it helps.
This worked. Thank you.
In a message dated 8/21/2015 5:47:12 P.M. Central Daylight Time,
When I click on Develop, a blue rectangle appears, with two lines
connecting opposite corners. I have been unable to move a photo into that window.
Can anyone help?
created by Tanuj Sandal (https://forums.adobe.com/people/Tanuj+Sandal)
in Photoshop Lightroom - View the full discussion