Common issues with Apple Font Book

Validation errors

The font management program Font Book may report a “kern table structure and contents” error when trying to activate very old versions of some Hoefler & Co. fonts. For help updating your fonts to more recent versions, please contact our sales office with your order details.

Family previews

Font Book features a preview window that displays a representative sample of characters within each font. It’s easily misled by the exotic glyphs that Hoefler & Co. regularly includes: the presence of the Thai currency symbol Baht (฿) leads Font Book to expect an entire Thai alphabet, and to report its absence with a series of grey “null characters.” Don’t be alarmed if you see these in the preview window: they don’t indicate any problems with the fonts, and can be effectively ignored in Font Book by hitting command-option-I.

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Try adding fewer fonts, fewer styles, or configuring the fonts with fewer features.