I can't open my Lr4, it said: Please update the file of the catalogue 'catalogue Lightroom 3' for use with Lightroom 4. I press the upgrade, it's a new catalog: catalog 4 Ircat lightroom, when I want to open the catalog, Lightroom 3 Ircat, I can't. He say

CAT

All, or almost all, LR version uses its own type of catalog file. A catalog LR 1 file will not open in 2 LR without it first be converted to work with LR 2.

It is the same for all other versions of LR and their corresponding catalog files. Good thing is that LR is able to upgrade a catalog file oldest to the version that is used with a newer version of LR. Bad part is you cannot open or convert an newer version of the LR catalog in an older version of LR.

Tags: Photoshop Lightroom

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