After downloading version 1.0.2 of the CK-12 FlexBook© App, some users may find that they have lost books which they have previously downloaded.
This will not affect most users. Only some will see this issue, depending on the mobile device they use. You will need to download your books again after upgrading, but only the first time you launch the app.
Future releases of the app will not have this issue. We apologize for any inconvenience.