In order to remove this warning or to take current backup follow the under mentioned steps : -
1. Click on Backup Data button or press Alt+B in User Login Details window.
2. Logic Backup window appears.
3. Select the Backup option or press Ctrl+B from the Options menu or click the Backup Data icon from the toolbar as shown in the figure.
4. It take some time to backup data.After successfully backing up data user will be able to login.
Note :- Make sure that you select the Backup instead of Restore.
Fig. Logic Backup
For writing Backup to a CD Follow the given below steps.
1. Select the "Write Backup to CD" option from the list.
2. Following window appears, Click on the Write CD Now ! option
3. Further following window appears click on write button.
4. After few mins data will be copy to the CD
5. Then, Close the window.