<p>I have a Macbook Pro and the latest Lightroom CC. When I went to backup my catalog, I got a message that said,<br>
"Catalog more than 4 GB. Use a third party utility such as 7 Zip or Stuffitexpander to extract your catalog<br>
backup". I don't really know what to do.<br>
Thanks,<br>
Carole</p>