To restore information from a Time Machine backup:

Quit Selenium.

Launch Time Machine by double clicking its icon in the Finder or by using the Dock.

In Time Machine, choose the date from which you want to restore your information.

Browse to ~/Library/Application Support/, where ~ indicates your home folder.

In the Application Support folder, select the folder named Selenium.

Click the Restore button in Time Machine.

Time Machine will exit, and the Finder will ask you if you want to replace the folder. Click the Replace button.