Fonts with missing or invalid property values will not be parsed.

[datio]

An edge case error really, but the ability to open webfonts could be quite handy.

Error: RangeError: argument 1 accesses an index that is out of range
Source File: http://ynakajima.github.com/ttf.js/vendor/jdataview.js
Line: 126

Example files (edited Ostrich Regular fonts):
http://duckduckgo.gr/ttfjs_test_fonts/Ostrich_Regular.ttf [original open source font]
http://duckduckgo.gr/ttfjs_test_fonts/Ostrich_blank_properties.ttf
http://duckduckgo.gr/ttfjs_test_fonts/Ostrich_invalid_properties.ttf
http://duckduckgo.gr/ttfjs_test_fonts/ostrich_protected_squirrel.ttf [webfont made with fontsquirrel generator]

TTFEdit [http://ttfedit.sourceforge.net/] will open the same files properly. No ttf parser that I know of can open such malformed files.

ostrich_protected_squirrel.ttf:

Maybe if there was an option to pre-populate or use custom values for any properties of the font would fix this issue?