Typophile

Errors when importing an existing Adobe OT font to FontLab

Charles Ellertson

I have a problem using FontLab & Adobe Minion Pro Regular.

If you simply open the font & try to compile the OpenType Features, you fill up the output error panel. I think the significant part of the message is:

GPOS feature 'kern' causes overflow of offset to a subtable (0x12c6c)

Since I

‹ Bickham Script Pro feature file available Loose leading on BF2 to FL4 export ›
John Hudson

FontLab decompiles the actual OpenType Layout tables in the font, but cannot always recompile them because of limitations in the decompiling/recompiling process. Subtables are not recognised during decompiling, for instance, or the font contains OTL lookup types that the Adobe FDK code in FontLab cannot compile.

twardoch

FontLab 4.6 is great for developing new OpenType fonts but if you're trying to modify somebody else's OpenTypes, you will likely hit the problems that you describe.

Also, there is no universal solution for that. Not all OpenType Layout features can be expressed in the Adobe FDK for OpenType source code that FontLab internally uses.

One of the new features of FontLab Studio 5 will be the ability to leave OpenType Layout tables in

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