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CO 23/16 Installation problem (solved)



  • Patrick Thornton

    What is the procedure to upgrade from CO22 to CO23. Mac OS Ventura requires CO upgrade. CO22 currently does not open.

    Would you explain "backing up the Catalog" to me.  Where do I find the Catalog?

    - Pat T

  • Patrick Thornton

    Sorry Keven - What I meant to ask was how do I make CO 22 compatible with Mac OS 13.0.1

    I don't understand Catalogs.  Where are they and why should I make duplicates?


  • Kevin Monahan

    Hi Pat,

    You don't actually "upgrade" CO 22 to 23. You download the installer for 23 to your Mac and then install it as a new program. When complete you'll have both CO 22 and CO 23 on your hard drive. Just make sure that you launch 23. Your Dock may still have the link to 22. I found the CO 23 installer by launching 22 and going to the Capture One 22 menu and selecting "Check for Updates...".

    The easiest way to do a backup is to launch 22 and then quit the app. A dialog appears before the app fully terminates, giving you the option to do a backup ("Backup") or just terminate ("Not Now".) The catalog backup is stored in a folder of your choosing. One important note. I keep my photos in separate locations on hard drive. I *don't* use the option to save photos in the catalog. Doing so makes the catalog *really* big and it will require a lot of space to backup.

    Have you already upgraded to 23 and can't start 22 anymore so you can do a backup? I need to see what the best solution is there.

    Some good info at

    Hope this helps.

  • Kevin Monahan

    Didn't see your note until I posted my response. :) 

    Looking at it appears that CO 22 cannot run on Ventura. Have you already updated to Ventura? My guess is that you'd need to upgrade to 23. Depending on your subscription/purchase option this may or may not be a free upgrade. 

    A catalog is a file on your hard drive with a ".cocatalog" suffix. Basically everything you do to an image in CO is stored in the catalog. Remember, CO does non-destructive editing, meaning the source image file is not changed. When CO displays (prints, exports, etc.) an image it basically reapplies all of your edits to the image--crop, color, masks, etc., so that you can see all your edits. (I say "basically" because CO does keep pre-rendered versions cached so it can update its UI quickly.) This "list of edit instructions" is kept in the CO catalog. (Sidebar, if you don't use layers you really should look into them.)

    Your catalog grows as you import and edit new images. But there's a big choice to make. When you import images into CO you can either move them into the catalog itself or keep them in their original locations and just add a "pointer" into the catalog. The difference is that when you do the former--store images inside the catalog--the catalog can get really big. Think of how much disk space your images take, specially if you work with RAW images. So I keep my images in separate locations on my hard drive and don't actually put them into the catalog. Side note--there's actually a third option when you import images. Imagine you're importing images from your camera's SD card. You actually want to move the images off the card so you can erase it and use it again. CO Import lets you specify a hard drive location where the images should be copied to. This gets them off the SD card and onto your hard drive. But not into your catalog.

    Some people use multiple catalogs, based on use. For example, professional vs personal photos. Or maybe casual vs fine art. I just use one catalog but no way is right or wrong--just what works for you. Another case might be if you mainly use CO on an iMac but travel with CO on a MacBook so you can look at photos in the field. When you get back you can export photos (and any edits you've done) from the MacBook catalog to the iMac catalog. 

    And finally, don't confuse Catalogs with Sessions. Most people never need to use a session. I only use them when I'm doing live capture during a photo session. 


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