To restore the default database of a previous version of ACDSee for Mac, please use the following steps:

- In ACDSee Photo Studio for Mac, click Tools | Restore Database…

- In Finder’s dialog window, select your Home folder

- On the keyboard, press Cmd + Shift + . (Period) together to show the hidden Library folder

- Navigate to the Database Folder “~/Library/Application Support/ACD Systems/ACDSee Photo Studio [version number]/Database” and then choose the Database File “com.ACDSystems.ACDSeePhotoStudio [version number] (version [version number]).mediaDatabase” to restore the database

Note following are the default database filenames and its folder locations:

ACDSee for Mac 9
The Database Filename is com.ACDSystems.ACDSeePhotoStudio9 (version 10.0).mediaDatabase and the Database Folder location is ~/Library/Application Support/ACD Systems/ACDSee Photo Studio 9/Database

ACDSee for Mac 8
The Database Filename is com.ACDSystems.ACDSeePhotoStudio8 (version 9.0).mediaDatabase and the Database Folder location is ~/Library/Application Support/ACD Systems/ACDSee Photo Studio 8/Database

ACDSee for Mac 7
The Database Filename is com.ACDSystems.ACDSeePhotoStudio7 (version 9.0).mediaDatabase and the Database Folder location is ~/Library/Application Support/ACD Systems/ACDSee Photo Studio 7/Database

ACDSee for Mac 6
The Database File name is com.ACDSystems.ACDSeePhotoStudio6 (version 9.0).mediaDatabase and the Database Folder location is ~/Library/Application Support/ACD Systems/ACDSee Photo Studio 6/Database