To manually install Craft for Photoshop, follow these steps:

1. Click the Install manually link in the error message within the Craft installer and a folder will appear with three .zip files
2. Unzip those files and three folders (Duplicate, Photos, and Type) should appear
3. Select and copy all three unzipped folders
4. In Finder, click on the Go option in the top OS X menubar and click Go to Folder...
5. In the window that appears, paste ~/Library/Application Support/Adobe/CEP/extensions and click OK
6. Paste the folders from step three into the “extensions” folder
7. You’re all set! Enjoy Craft.