I have a Kindle 3 wifi (no 3G) and use Calibre to manage my books… Recently I’ve come across an issue and I don’t know how to fix it… When I upload books to my kindle it will transfer the ‘new’ book but also ‘remove’ a book already in my kindle ( I notice that the green checkmark will come up for the new book but will disappear for one in my kindle – I’ve disconnected the kindle to see if it’s there or not and it isn’t) this specially happens with books in a series! Also I’ve noticed that if I transfer more than 4 books at a time not all of them get sent to my kindle, it randomly picks from the batch… This is really frustrating me…
I hope someone has some tips or answers