You need to go at the location where your Lightroom Catalog is stored and remove the Previews.lrdata folder (not .lrcat file)
By default, it is stored under Pictures\Lightroom folder.
thank you so much - I seem to have two of those folders. one folder has smart in the title. I don't even see the .ircat file. should I remove the two folders?Kelly
You need to remove just the previews.lrdata folder, not smart previews but .lrcat file should also be there at the same location.
Thank you so much !! It worked!!
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