Thread: "Not a Valid Font"
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Old 09-30-2022, 11:22 AM   #1
enuddleyarbl
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"Not a Valid Font"
In several books, the Calibre Editor puts a red shield with an exclamation mark in it next to some font files (the book I'm currently looking at (CS Friedman's "This Alien Shore" from Amazon) says they're .otf files. The hover text for those files simply says "Not a Valid Font." From what I've been able to find, there's no way to fix those fonts. Is that correct? Out of curiosity, is there any way to find out in what way the fonts are broken?
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