Thank you for your reply. I am using w10-64 bit (latest update). I'll probably just reinstall the previous version of Calibre tomorrow. Yesterday I bought 4 books. The first two let me add the metadata and, later, when I clicked "edit metadata" for the third book the entire program froze and rebooting was my only option to exit it. Curious. Anyway, I do appreciate your help. I've used Calibre since 2008 and this is the first real problem I've encountered
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