I have LR 6.4 running on Windows 7. I open LR 6.4,open a folder, select one photo (raw) and "develop" it. Everything works fine.
When I return to the "library" view everything at first appears to be fine.
When I try to "develop" a second photo in the same folder or try to change folders, LR 6.4 crashes. Any suggestions?
Try unchecking the option Preferences > Performance > Use Graphics Processor.
John Rellis .... you are a genius. Made that change and all is well. THANK YOU.