When opening Lightroom 5.4, I immediately get an error message saying "Lightroom encountered an error when reading from it's preview cache and needs to quit." Followed by an immediate shutdown of the program. Does anyone know how to fix this? Thanks. -Rich
There are an estimated 1,314,967 posts about this already in the forum. Consider doing a forum search before posting yet another of the same, please.
A plain ol' internet search turns up a veritable sh'load of them too:
But to answer your question:
Delete your "catalog Previews.lrdata" folder (delete the whole folder, and only that folder). It's in the same directory as your catalog (.lrcat file)..