On Thu, 2012-07-05 at 10:04 +0200, Hans Hagen wrote:
> \p_mathspacing => \p_math_spacing
I patched math-arr.mkiv, but I am still getting the same error. I don't
know why since I replaced all instances of \p_mathspacing with
\p_math_spacing and deleted the cache in ~/.texmf-var/.