I have a 2022 version of ConTeXt which I have used for the last 3 years. It has no problem with:

\setupbackend

[format=PDF/X-1a:2001,

intent=SWOP2006_Coated3v2.icc]

Recently I set up a separate more recent 2025 version of ConTeXt, and I get an error with the above intent statement. If I remove intent entirely, everything compiles correctly. I don't understand a great deal about the 'intent' statement, so bear with my ignorance. For the most part, whatever I produce is printed in BW/grayscale, not color.

Two questions:

(1) what has changed with the latest ConTeXt that causes this error with that color profile?

(2) If preparing for BW/grayscale printing only, should I be using a different profile? I am assuming I cannot simply omit intent= completely.

Julian