5 Replies Latest reply: Aug 6, 2012 7:12 AM by Gary - former developer
Gary - former developer Level 1 Level 1

I have an extensive collection of fonts (60,0000+). Several hundred of them will crash my system when I open one of them in Finder (double-click the suitcase). I picked one at random for some serious examination.


I looked at my sample with many font tools. My latest tool was FontDoctor (v5 and v7). FontDoctor reported "no problems found" with my font. Yet the crash persists.


Please suggest a tool that can do a thorough job of investigating and repairing my corrupt fonts.




G4, Mac OS 9.2.x
Solved by Gary - former developer on Aug 6, 2012 7:12 AM Solved

Well it turns out that NO tool can repair this font. So I wrote my own.


The problem turned out to be a bad 'hhea' table. The values for Ascender, Descender and LineGap were all zero.


Once I changed these values to something reasonable, the font appeared like magic and my system no longer crashes with a "Divide by Zero" error.