I use a mac mini OSX 10.6.8, I buy books from Borders, move them to Adobe Digital Editions, ("ADE") then to my Sony Reader. Lately ADE does not work as it should. The Adobe manual says that when my Sony reader is connected to my computer and ADE is opened, an icon representing my Sony reader will appear on the left of the screen, thus allowing me to drag and drop books to the reader. Unfortunately no such icon appears. Also my Sony reader now denies me access to my books, When I try to open a book a message appears "protected by digital rights management".
I have been using my Sony reader successfully for around 2 years, now I can not use it at all and the 100 or so books I bought can not be accessed, waste of a considerable sum of money.
Why is it so?