After a long lull, I have installed a recent Context (ver: 2004.6.30)
and find that my typescripts that do margin kerning are having trouble.
Invoking a typescript that uses \defineprotrudefactor will cause the job
to stop; I don't see any error messages. When the problem line is
commented out the job completes.

I've attached a minimal example.

-Bill
-- 
Sattre Press                            Curiosities of the Sky
http://sattre-press.com/                    by Garrett Serviss
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