Quote:
Originally Posted by MRM66
I am running calibre 4.15
As worried I will mess things up if I update?
Because it works to convert my books to EPub and Mobi.
Mobi because it works to transfer Mobis to my old kindle when I want to read outside with no glare.
But open to suggestions
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You should update your Calibre to 4.23. That's the last version 4.
What OS and version are you running?