Thank you for your reply.
I have deleted the file "lightroom4 preference."
LR4 opens but remains in version 4.1. When I run the update I have a message that appears: "Incorrect checksum" (in french - I'm French)
I opened an album and I find that for photos in jpg it seems to work correctly. But for RAW formats (a majority of photos) a message appears "An error occurred while work on the picture" and can not continue.
What do you do?
Le 7 févr. 2015 à 19:38, JimHess <firstname.lastname@example.org> a écrit :
Total failure of LR4
I suggest that you delete your preferences file so Lightroom can generate a new one:
Preference and other file locations in Lightroom 5 <https://helpx.adobe.com/lightroom/kb/preference-file-locations-lightroom-41.html>
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