I went away on vacation and used my husband's laptop to edit images. Now that I am home, I am not able to access my catalog at all on my own computer. It's very frustrating, I can't even find it in my computer anywhere. One error that popped up said that I couldn't use a specific catalog because it was too new and I have Lightroom 5.7.1. Any suggestions?
It seems like you have used Lightroom CC on your husband computer, so we need to install Lightroom CC on your home computer as well.
If you have subscription for the Creative cloud you can download it from there.