After upgrade to 7.5.4, the Plesk individual domain backup functions do not work correctly. Example 1. A scheduled backup existing prior to the upgrade still exists but ran only once (without intervention) after the upgrade. The scheduled time reverts back to 00:00 after the backup is created. It will not run the next day unless the scheduled time is reset to a value other than 00:00. Once reset, it will run once then not for any subsequent days. Example 2. A newly created scheduled backup (different domain than above) can be created and saved in Plesk and the settings will remain visible in Plesk until it is time to run the backup. The schedeuled backup does not get created. The scheduled time reverts back to 00:00 as above. In checking the database, when any changes are made or a new backup is scheduled, the data is reflecetd in the BackupTasks table. Once the backup is run (example 1) or past the time the backup is to run (example 2), the last_backup field is reset to 0000-00-00 00:00:00. The data related to the scheduled backup in the Parameters table is not affected. In both examples, data is backed up locally. Ownership and permissions settings are correct. I have tried removing the psa-bu rpm and reinstalling it. No change. Is any one else having this same or similar problem? Can anyone offer any insight? Solutions?