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Lightroom Quit Unexpectedly


New Member
Dec 23, 2011
Lightroom Experience
Lightroom Version
Operating System
macOS 10.13 High Sierra
That's the message I get when I start a plugin either Nik or Topaz from LR5. It just started doing this out of the blue, any suggestions on how to fix? Mac OS 10.13.3

Victoria Bampton

Lightroom Queen
Staff member
Lightroom Guru
Sep 29, 2007
Southampton, UK
Lightroom Experience
Power User
Lightroom Version
CC Cloud
We're hearing quite a number of reports of crashes in LR6.11 and earlier on High Sierra. It appears that Apple made some notable changes in High Sierra that affect Lightroom. The fix is to upgrade to Lightroom 6.12 or later. I haven't come across another reliable one I'm afraid.