Just to add a little more.....
I can confirm that in my case at least, Calibre OR my particular laptop does not remove the KT properly from the WIN7 system, and this most certainly causes database corruptions.....
I see in my laptop's device manager that the USB mass storage device has a Warning exclamation mark next to it immediately after Calibre has "removed" it.
If I remove the KT in the normal WIN7 way, it disengages correctly. I don't currently have any other PC available to double check against, I'm afraid.
|