Is there a problem with continuing to use LRCat3 with LR4. My backup settings show that the library used is LR3's and didn't change when I upgraded to LR4. I don't want to trash LRCat3 if it is OK to continue using that or should I migrate all to LRCat4 and how to do this?
Unless you did something out of the normal, Lightroom 4 created a copy of your previous catalog and converted it to the new format. The old Lightroom 3 catalog is still intact and can be used by Lightroom 3. There is no way that either program can access the catalog from the other program. They are not compatible. If Lightroom 3 is still working properly, it is working on its original catalog. And Lightroom 4 is working on a converted copy.
I remember that my LR3.lrcat was renamed by LR4 conversion to something like LR3-2.lrcat.
So the catalog you think is still LR3, is probably the LR4 catalog.
Give it your own name like NoviGregLR4.lrcat and there will be no more confusion.
At the same time rename the previews file exactly the same NoviGregLR4 Previews.lrdata. (for example)
So check first of all the actual name of your converted catalog in LR4.
Under Help/System Info/Library Path.
Thanks Jim for the reply.
Here is a screen shot of my Lightroom file (Users/Pictures/Lightroom)
You can see that I have two "lrcat" files. One is with LR3 and the other LR4, but the LR4 cat file shows it as 3.lrcat - not 4. My question is now, can I trash the LR3 lrcat dated Apr 25? Should I also trash the LR4 2.lrcat file dated Mar 14 and trust that the LR4 3.lrcat has everything from LR3 and LR4 in it.
Also, what is with LR4 .lrcat dated Mar 12 that is just a small file?
Is there a way to be safe to merge all the lrcat files and see if LR4 will identify all the duplicates or should i just reinstall LR4 and see if it figures it out?
Lots of questions. Maybe the answer is obvious. Right now my backup routine in Preferences is that it backs up to LR4 3.lrcat and since that's the largest file my guess is that it's the "old LR3 cat" with anything post with LR4 in it.
Your thoughts please.
You're possibly a little confused by the suffix at the end of the catalog names. When a new catalog is created, for whatever reason, if you leave the catalog name the same as the current version, Lightroom simply adds the "-2" suffix. Do it again and you end up with a "-3" suffix....it has nothing to do with the version of Lightroom you are using.
Looking at the contents of that folder I see your original LR3 catalog (Lightroom 3 Catalog.lrcat) plus associated previews cache. If you have no intention of ever using that catalog again, it COULD be deleted.....or better still it could be zipped and moved to some archive location (just in case...). The Lightroom 3 Catalog Previews.lrdata could be deleted.
You then have 3 versions of Lightroom 4 catalog: Lightroom 4 Catalog.lrcat, Lightroom 4 Catalog-2.lrcat, and Lightroom 4 Catalog-3.lrcat. The latter would appear to be the current catalog, the other 2 appear not to have been used since March. So why not zip those 2 also and park them in the same archive folder? The previews cache, Lightroom 4 Catalog-2 Previews .lrdata could be deleted.
The 4 Temporary folders at the bottom of the list can be deleted.
That would leave only the current catalog - Lightroom 4 Catalog-3.lrcat and its preview cache Lightroom 4 Catalog-3 Previews.lrdata. The other two files, the journal and the lock files are temporary files which exist only while LR is active. If the naming bothers you, simply rename the catalog to whatever you want, just remember to rename the previews cache in tandem.