Yes it had detected the loss of data but had carried on and picked up as soon as the console came back - well done Steve!
However I noticed there were many messages regarding failure to connect to the FTP server cropping up every 5 mins - the update time I have - throughout the log. I thought this was strange as I am not using FTP as my webserver is also on the same RasbPi.
Now when I set this up it wouldn't let me use a blank destination in the FTP/Web hostname etc so I had simply put 127.0.0.1 and set the user name and password to the one I use to access the RasbPi. CMX FTP was objecting to this as the RasbPi doesn't have FTP installed - and I would rather leave it off. So....
I double checked all my settings in Extra Web files and non had FTP set - so I unchecked the AutoUpdate box in Web/FTP settings - this cured the FTP message - but seemed to prevent the .json files being produced every 5 mins - so I had to recheck it. To get over the FTP error in the log I had to set the FTP destination to my ISP FTP server - which at least reduces the data in the log file, but is not the solution I need
I have obviously missed something simple! What should I be doing to stop it trying to FTP things please?