The software has been running fine for years. At the prompt of Lightroom I attempted to perform a backup, i don't think the backup ever finished and now suffers a critical error and displays an error "Adobe Photoshop Lightroom has stopped working" and does not go any further.
I have tried to repair the software, no change. i have tried to remove and reinstall, no change.
Any help would be appreciated.
When was the last time you restarted your computer? Reboot and test.
I've made several attempts at reinstalling software with rebooting after each attempt. Deleting residual directories and running a registry scan and repair have not changed anything. Each time I restart the program after a fresh install the same error appears immediately as it tries to open a catalog.