This is a common occurrence. Since we sent a Lightroom catalog back and forth, we simply need to relink the original images to the new catalog.


1. Go into Grid View in the Library Module in Lightroom. You can do this by pressing the letter g.

2. You'll see an exclamation point in the top right corner of each photo, click that icon.


3. Click "Locate."


4. Navigate to the original file, and click select.

5. All the other images in the catalog should now be linked.


If that doesn't work, follow these steps:


1. Go into Grid View in the Library Module in Lightroom. You can do this by pressing the letter g.

2. On the left panel, under Folders you will see a question mark next to the folder for the images.

3. Right click and select "find missing folder."

4. Navigate to the correct folder that contains the images and click "Choose."