Two books are failing to convert entirely
I have two books in EPUB format that i want to convert to PDF. Calibre is incapable of doing this, being stuck at 47% and then simply giving up. Converting them to other file formats also doesn't work. Trying to go into edit book and then clicking on check book also doesn't work, as it loads for a time and then simply closes the book down.
What am i supposed to do?
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