This worked for me using ProFTPD custom config (needs root access):
#go to ProFTPD config directory
cd /etc/proftpd.d
#create custom additions file
touch proftpd_custom.conf
#add directive to suit
<Directory /var/www/vhosts/yourwebspace.com/yourdomain.com>
UserOwner valid_user
GroupOwner...
For future reference, updating all Plesk components in Upgrade Panel fixed this problem; (but couldn't upgrade to 12.5 because of restrictive Virtuozzo resource limits at 1&1 hosting)..
Problem still occurs..
/var/log/plesk/install/plesk_12.0.18_repair_problems.log
=
No output
/var/log/plesk/install/plesk_12.0.18_repair.log
=
Started bootstrapper repair procedure. This may take a while.
Certain actions may be skipped if not applicable.
-- Warning: Skipping the data of table...
Virgin installation, switched on today, just the one domain created, click on any link involving Backup Manager and get:
[18-Apr-2016 10:49:30 America/Chicago]
PHP Fatal error: Class Smb_BackupController contains 1 abstract method and must therefore be declared abstract or implement the...