Greetings,

The attached MWE combines 12 images in  a 3 by 4 grid; with horizontal and
vertical spacing set by setupcombinations.

I have two questions. First, can someone please tell me why the vertical
spacing is not applied between the first and second and third and fourth
rows?  Second, why, If I try, e.g.c 15 images, does  ConTeXt complain of a
missing left brace. More generally, my mwe failed with an odd number of
images, but succeeded with an even number.

Thanks.

With kind regards,

Michael



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