Having had plenty of performance problems with LR4, now 4.1 RC (unimproved), I probably should not have been surprised to find the whole catalogue missing when I tried to open it today. My C drive where the catalogue should be, and my actual images (on another drive) are both fine. But I got an error when I tried to open the one and only catalogue I run. Something to the effect that it was unable to find the source for LR 4.1, and it went on with verbage I certainly did not understand. I wish now that I would have written down the message, because I cannot recreate it. This is because when I tried again to open the catalogue by clicking directly on where it lives, the program all of a sudden makes a brand new catalogue for me with none of the 25,000 images that were on the catalogue I've been working with. So when I click the icon now, I get this new empty catalogue happily opening.
Now when I go to my most recent backup and try to open that, I get a message from Windows saying it is attempting to configure LR 4.1 RC, then an error message saying "the feature you are trying to use is on a network resource that is unavailable". It goes on to ask that I enter an alternate path to a folder containing the installation package 'Adobe_Lightroom_x64.msi'. A search for that turned up nothing. So it appears to be trying to install Lightroom, correct? But I already installed it, and it appears in my programs folder. I assumed that to restore a catalogue backup you simply went into where your backups are stored and clicked on the most recent one. But I don't know how my catalogue disappeared in the first place. Again, my images are safe and sound on another drive (but without a day or two worth of edits saved into the metadata, unfortunately - so I'd really like to get the catalogue back).
Can anyone help with figuring out what may have happened in the first place, and how to restore from my backup (which includes the most recently imported images and all my edits). Thanks.
P.S. LR 4 is turning out to be a nightmare. I'm really sorry I bought it.