How can I safely transfer my Family Tree Builder tree from one computer to another?

To transfer your Family Tree Builder Tree from one computer to another:

First, save your family tree from Family Tree Builder onto removable media. The best way to back up your family tree is to use Family Tree Builder’s backup facility on File > Back up Project. It will save a single file, perfect for backup, that contains your family tree and all its photos and documents. You can save it to a usb flash key, or to a cd/dvd.

Such a backup can then be restored on Family Tree Builder on a different computer, by going into Family Tree Builder on that computer and using File > Restore Project.