Error when downloading 5.7.5 to 5.7.5.1

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It appears my Ctrl C or Ctrl V hasn't functioned for some reason so I can't paste the error message .... but there was one!
I also notice that Back-up hasn't been implemented through the Dashboard/System & Settings/ Update Conc5 for 5.7. I backed up through my domain Control Panel but it would be good to have this facility through Dahboard especially if there are errors occurring in downloading/installing the Conc 5.7 upgrades.
Thanks
Roger