[chooks]

Hi
I seriously hope someone can help me because I've no idea whats happening, I've used Calibre for a long time now and I've been really happy with it, I mostly use it to edit metadata, convert ebooks and send to my device, anyway my problem is when i send any book across it's been sorted into the author album then the series album then the ebook but theres now a question mark next to the title and when i click to open it comes up with file open failed, this is happening with every book - i've tried to do one at a time and its a no go, I've even tried to copy and paste one from my calibre library and it still doesn't work yet when i send them to my sisters e-reader it works, also i've tried it with calibre portable and it hasn't worked but when i use my son's laptop it works, it seems like my laptop doesn't like my e-reader but seriously that just doesn't make sense especially as its worked in the past, any help will be greatly appreciated thanks