Utility Problem - Corrupt Preferences

Canon XF Utility

I've been using the Canon XF Utility to check what I have on my Compact Flash cards and it is a useful bit of software for saving a card's contents to a drive.

But, then one day a bit goes missing....

As  an XF305 owner  I am registered member of Canon Professional Services
https://cps.canon-europe.com/

So, I phoned them...