Alan Bowen schrieb am 30.04.2021 um 13:19:

Hi, Wolfgang—

I copied all the fonts to a new document (file attached) and ran ConTeXt. The problem persists. The cause, I think, comes in the lines:

\definefallbackfamily[mainface] [mm] [STIX Two Text]
[range=digitsnormal,
force=yes,
features=f:oldstyle]
which used to give me oldstyle numerals.

I'm unable to reproduce the error with your example and most of the fallbacks are ignored because I don't have the fonts.

To ensure there is no problem with the format and font database delete the cache and rebuild it:

mtxrun --script cache --erase
mtxrun --generate

When this doesn't help you simplify your example. First remove one \definefallbackfamily at a time and afterwards remove \definefontfamily until the error disappears.

Wolfgang