Why It Happens
- Some fonts contain a very large number of kerning pairs.
- When installed, FontBook may show a warning or error message.
What It Means
- The error looks alarming, but it usually has no real consequences.
- Once installed, the font works as expected.
The Good News
- Applications such as Adobe Creative Suite can fully use the additional features.
- The FontBook warning is simply a limitation of the program, not the font itself.