I just updated to Lightroom 6.4. In develop module, when I've set flags on photos for processing. I'll check the filter to display flagged items. On more than 1 occasion, Lightroom crashes
This never happened on any previous versions
Try these two magic spells:
- Uncheck the option Preferences > System Performance > Use Graphics Processor.
- Reset LR's preferences: Resetting the lightroom preferences file - updated - Lightroom Forums
They fix a surprising number of issues when LR's user interface goes south.
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