Lightroom not opening
After downloading the latest version of Lightroom v 12.3 all previous photos from the year 2023 disappeared completely from Lightroom catalog. I tried to use my back up catalog to reinstall them but now an error message stating the Lightroom catalog v12 is corrupt and cannot be used until it is repaired and then a blue running circle for about 10 seconds will appear but Lightroom will not open. I have tried opening other catalogs (even recent catalogs saved on an external hard drive but the same error message still appears). I have read to give it time but it has been left all day and nothing is happening. I have tried un-installing and reinstalling Lightroom, have tried going back to previous versions, tried updating computer drive, literally everything but I cannot get it to open. I am just a hobbiest Lightroom user and definitely no computer whizz so would appreciate any help whatsoever. Is it something to do with the new version? Many thanks!
