Hi! Have used Calibre (Mac version) with no problems with original Nook. Just got a PRS-T1 and have no end of problems. I'm pretty hopeless with the fine points of computer issues, so please be gentle with me :

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Okay, got the Sony up and running, authorized with Adobe, downloaded a book, no problem. Made sure that the Sony software was shut down after checking the preferences not to automatically open when the reader is plugged in. Disconnected Sony.
Downloaded most recent version of Calibre, loaded 323 books in bunches to Sony on a SD (8gb /4 - brand new, unused SanDisk). Books had tags (17) and there were a few series as well. Disconnected after all were loaded, and covers were missing, ghost books were there claiming to be deleting but not going anywhere. Books did go into collections, though.
I read through the forums and saw some posts on how to get the covers to show, made the changes in Calibre. I also saw that others reported this and seemed to get it going on the second try, so I formatted the sd and tried to load again (in bunches as it seemed very slow). Same problem - ghost books.
Formatted the SD again, changed Calibre so that it would not make collections, and loaded about 10 books. This time, the books are confused - touch title a and get book b - and still have ghost books.
Have I destroyed this beyond repair? Can anyone help a hopeless old lady? :

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