I am having fits with my Kindle PW... calibre does not want to play nicely with it. I spent a large portion of today trying to figure it out by searching the MR Forums and trying out the suggested fixes. I finally gave in and submitted a question on the calibre devices forum and Kovid came back and said my drive is probably failing.
He says I should contact amazon and get it replaced - but i'm not sure what I'd tell them. I don't know WHY the drive is failing and when i tell them i load through calibre, they may very well tell me they won't do anything for me.
It's so frustrating! I was thinking about getting a Fire after the first of the year... now it seems the decision is made for me. In the meantime, can anyone tell me how I can read my calibre books on my iphone? I have the Kindle app but of course that is only books from amazon that haven't been through calibre and is also only a portion of all of my books.... Big sigh...